Do these values look correct?
I used your payload from the above post & the info in the modbus parameters screenshot
demo flow...
[{"id":"8fa37f7a.7c8a7","type":"inject","z":"553814a2.1248ec","name":"","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"","payloadType":"date","x":1040,"y":240,"wires":[["a54b9385.4e6c1"]]},{"id":"a54b9385.4e6c1","type":"function","z":"553814a2.1248ec","name":"","func":"\nreturn { \"topic\": \"eb39b2fd.caaee8\", \"messageId\": \"5fd7cdca5c5a707be129c8d7\", \n\"payload\": [{ \"type\": \"string\", \"name\": \"ID02\", \"offset\": 0, \"length\": 4, \"offsetbit\": 0, \"scale\": \"1\", \"mask\": \"\", \"id\": 0, \"value\": \"SunS\" }, \n{ \"type\": \"byte\", \"name\": \"DID03\", \"offset\": 5, \"length\": 1, \"offsetbit\": 0, \"scale\": \"1\", \"mask\": \"\", \"id\": 1, \"value\": 1 }, \n{ \"type\": \"uint16be\", \"name\": \"Block04\", \"offset\": 6, \"length\": 1, \"offsetbit\": 0, \"scale\": \"1\", \"mask\": \"\", \"id\": 2, \"value\": 65 }, \n{ \"type\": \"string\", \"name\": \"Manufacturer05\", \"offset\": 8, \"length\": 32, \"offsetbit\": 0, \"scale\": \"1\", \"mask\": \"\", \"id\": 3, \n\"value\": \"SolarEdge \\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\" }, \n{ \"type\": \"string\", \"name\": \"Model21\", \"offset\": 18, \"length\": 32, \"offsetbit\": 0, \"scale\": \"1\", \"mask\": \"\", \"id\": 4, \"value\": \n\"\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000SE4000\\u0000\\u0000\\u0000\\u0000\" }, { \"type\": \"string\", \"name\": \"Version45\", \"offset\": 44, \"length\": 8, \"offsetbit\": 0, \"scale\": \"1\", \"mask\": \"\", \"id\": 5, \"value\": \"00\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\" }, \n{ \"type\": \"string\", \"name\": \"SerialNumber\", \"offset\": 40, \"length\": 32, \"offsetbit\": 0, \"scale\": \"1\", \"mask\": \"\", \"id\": 6, \"value\": \"SE4000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\" }], \"queueLengthByUnitId\": { \"unitId\": 1, \"queueLength\": 0 }, \"queueUnitId\": 1, \"unitId\": 1, \"modbusRequest\": { \"value\": 1607978442267, \"unitid\": \"1\", \"fc\": 3, \"address\": \"40000\", \"quantity\": \"65\", \"messageId\": \"5fd7cdca5c5a707be129c8d7\" }, \n\"responseBuffer\": \n{ \"data\": [21365, 28243, 1, 65, 21359, 27745, 29253, 25703, 25888, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 21317, 13360, 12336, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 12336, 12339, 11826, 12600, 13824, 0, 0, 0, 14150, 12597, 12342, 17463, 0, 0, 0, 0, 0, 0, 0, 0, 0], \n\"buffer\": Buffer.from([83, 117, 110, 83, 0, 1, 0, 65, 83, 111, 108, 97, 114, 69, 100, 103, 101, 32, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 83, 69, 52, 48, 48, 48, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 48, 48, 48, 51, 46, 50, 49, 56, 54, 0, 0, 0, 0, 0, 0, 0, 55, 70, 49, 53, 48, 54, 68, 55, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]) }, \n\"_msgid\": \"861638c3.74b758\", \"originalPayload\": [21365, 28243, 1, 65, 21359, 27745, 29253, 25703, 25888, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 21317, 13360, 12336, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 12336, 12339, 11826, 12600, 13824, 0, 0, 0, 14150, 12597, 12342, 17463, 0, 0, 0, 0, 0, 0, 0, 0, 0], \"specification\": { \"options\": { \"byteSwap\": [], \"resultType\": \"array\", \"singleResult\": true, \"msgProperty\": \"payload\", \"setTopic\": false }, \"items\": [{ \"type\": \"string\", \"name\": \"ID02\", \"offset\": 0, \"length\": 4, \"offsetbit\": 0, \"scale\": \"1\", \"mask\": \"\", \"id\": 0, \"value\": \"SunS\" }, { \"type\": \"byte\", \"name\": \"DID03\", \"offset\": 5, \"length\": 1, \"offsetbit\": 0, \"scale\": \"1\", \"mask\": \"\", \"id\": 1, \"value\": 1 }, { \"type\": \"uint16be\", \"name\": \"Block04\", \"offset\": 6, \"length\": 1, \"offsetbit\": 0, \"scale\": \"1\", \"mask\": \"\", \"id\": 2, \"value\": 65 }, { \"type\": \"string\", \"name\": \"Manufacturer05\", \"offset\": 8, \"length\": 32, \"offsetbit\": 0, \"scale\": \"1\", \"mask\": \"\", \"id\": 3, \"value\": \"SolarEdge \\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\" }, { \"type\": \"string\", \"name\": \"Model21\", \"offset\": 18, \"length\": 32, \"offsetbit\": 0, \"scale\": \"1\", \"mask\": \"\", \"id\": 4, \"value\": \"\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000SE4000\\u0000\\u0000\\u0000\\u0000\" }, { \"type\": \"string\", \"name\": \"Version45\", \"offset\": 44, \"length\": 8, \"offsetbit\": 0, \"scale\": \"1\", \"mask\": \"\", \"id\": 5, \"value\": \"00\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\" }, { \"type\": \"string\", \"name\": \"SerialNumber\", \"offset\": 40, \"length\": 32, \"offsetbit\": 0, \"scale\": \"1\", \"mask\": \"\", \"id\": 6, \"value\": \"SE4000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\" }] }, \"values\": [\"SunS\", 1, 65, \"SolarEdge \\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\", \"\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000SE4000\\u0000\\u0000\\u0000\\u0000\", \"00\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\", \"SE4000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\"], \"objectResults\": { \"ID02\": { \"type\": \"string\", \"name\": \"ID02\", \"offset\": 0, \"length\": 4, \"offsetbit\": 0, \"scale\": \"1\", \"mask\": \"\", \"id\": 0, \"value\": \"SunS\" }, \"DID03\": { \"type\": \"byte\", \"name\": \"DID03\", \"offset\": 5, \"length\": 1, \"offsetbit\": 0, \"scale\": \"1\", \"mask\": \"\", \"id\": 1, \"value\": 1 }, \"Block04\": { \"type\": \"uint16be\", \"name\": \"Block04\", \"offset\": 6, \"length\": 1, \"offsetbit\": 0, \"scale\": \"1\", \"mask\": \"\", \"id\": 2, \"value\": 65 }, \"Manufacturer05\": { \"type\": \"string\", \"name\": \"Manufacturer05\", \"offset\": 8, \"length\": 32, \"offsetbit\": 0, \"scale\": \"1\", \"mask\": \"\", \"id\": 3, \"value\": \"SolarEdge \\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\" }, \"Model21\": { \"type\": \"string\", \"name\": \"Model21\", \"offset\": 18, \"length\": 32, \"offsetbit\": 0, \"scale\": \"1\", \"mask\": \"\", \"id\": 4, \"value\": \"\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000SE4000\\u0000\\u0000\\u0000\\u0000\" }, \"Version45\": { \"type\": \"string\", \"name\": \"Version45\", \"offset\": 44, \"length\": 8, \"offsetbit\": 0, \"scale\": \"1\", \"mask\": \"\", \"id\": 5, \"value\": \"00\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\" }, \"SerialNumber\": { \"type\": \"string\", \"name\": \"SerialNumber\", \"offset\": 40, \"length\": 32, \"offsetbit\": 0, \"scale\": \"1\", \"mask\": \"\", \"id\": 6, \"value\": \"SE4000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\" } }, \"keyvalues\": { \"ID02\": \"SunS\", \"DID03\": 1, \"Block04\": 65, \"Manufacturer05\": \"SolarEdge \\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\", \"Model21\": \"\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000SE4000\\u0000\\u0000\\u0000\\u0000\", \"Version45\": \"00\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\", \"SerialNumber\": \"SE4000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\" }, \n\"arrayResults\": [{ \"type\": \"string\", \"name\": \"ID02\", \"offset\": 0, \"length\": 4, \"offsetbit\": 0, \"scale\": \"1\", \"mask\": \"\", \"id\": 0, \"value\": \"SunS\" }, { \"type\": \"byte\", \"name\": \"DID03\", \"offset\": 5, \"length\": 1, \"offsetbit\": 0, \"scale\": \"1\", \"mask\": \"\", \"id\": 1, \"value\": 1 }, { \"type\": \"uint16be\", \"name\": \"Block04\", \"offset\": 6, \"length\": 1, \"offsetbit\": 0, \"scale\": \"1\", \"mask\": \"\", \"id\": 2, \"value\": 65 }, { \"type\": \"string\", \"name\": \"Manufacturer05\", \"offset\": 8, \"length\": 32, \"offsetbit\": 0, \"scale\": \"1\", \"mask\": \"\", \"id\": 3, \"value\": \"SolarEdge \\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\" }, { \"type\": \"string\", \"name\": \"Model21\", \"offset\": 18, \"length\": 32, \"offsetbit\": 0, \"scale\": \"1\", \"mask\": \"\", \"id\": 4, \"value\": \"\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000SE4000\\u0000\\u0000\\u0000\\u0000\" }, { \"type\": \"string\", \"name\": \"Version45\", \"offset\": 44, \"length\": 8, \"offsetbit\": 0, \"scale\": \"1\", \"mask\": \"\", \"id\": 5, \"value\": \"00\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\" }, { \"type\": \"string\", \"name\": \"SerialNumber\", \"offset\": 40, \"length\": 32, \"offsetbit\": 0, \"scale\": \"1\", \"mask\": \"\", \"id\": 6, \"value\": \"SE4000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\\u0000\" }], \n \"buffer\": Buffer.from([83, 117, 110, 83, 0, 1, 0, 65, 83, 111, 108, 97, 114, 69, 100, 103, 101, 32, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 83, 69, 52, 48, 48, 48, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 48, 48, 48, 51, 46, 50, 49, 56, 54, 0, 0, 0, 0, 0, 0, 0, 55, 70, 49, 53, 48, 54, 68, 55, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]) };","outputs":1,"noerr":0,"initialize":"","finalize":"","x":1050,"y":300,"wires":[["546944da.d37fec","45cc6637.f52cc"]]},{"id":"546944da.d37fec","type":"debug","z":"553814a2.1248ec","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"true","targetType":"full","x":1210,"y":300,"wires":[]},{"id":"45cc6637.f52cc","type":"buffer-parser","z":"553814a2.1248ec","name":"","data":"responseBuffer.buffer","dataType":"msg","specification":"spec","specificationType":"ui","items":[{"type":"string","name":"ID","offset":0,"length":4,"offsetbit":0,"scale":"1","mask":""},{"type":"uint16be","name":"DID","offset":4,"length":1,"offsetbit":0,"scale":"1","mask":""},{"type":"uint16be","name":"Length","offset":5,"length":1,"offsetbit":0,"scale":"1","mask":""},{"type":"string","name":"Manufacturer","offset":6,"length":32,"offsetbit":0,"scale":"1","mask":""},{"type":"string","name":"Model","offset":38,"length":32,"offsetbit":0,"scale":"1","mask":""},{"type":"string","name":"Version","offset":70,"length":16,"offsetbit":0,"scale":"1","mask":""},{"type":"string","name":"SerialNo","offset":86,"length":32,"offsetbit":0,"scale":"1","mask":""},{"type":"uint16be","name":"DeviceAddress","offset":118,"length":1,"offsetbit":0,"scale":"1","mask":""}],"swap1":"","swap2":"","swap3":"","swap1Type":"swap","swap2Type":"swap","swap3Type":"swap","msgProperty":"payload","msgPropertyType":"str","resultType":"keyvalue","resultTypeType":"output","multipleResult":false,"fanOutMultipleResult":true,"setTopic":false,"outputs":1,"x":1070,"y":360,"wires":[["703d6667.18c618"]]},{"id":"703d6667.18c618","type":"debug","z":"553814a2.1248ec","name":"Output","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"true","targetType":"full","statusVal":"","statusType":"auto","x":1210,"y":360,"wires":[]}]