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| Order | Attribute JSON (not currently used) | Description | Expected values | Mandatory | |
|---|---|---|---|---|---|
| 0 | co_type | Type of ASDU | YES | ||
| 1 | co_ca | Common Address of ASDU | YES | ||
| 2 | co_ioa | Information object address | YES | ||
| 3 | co_cot | Cause of Transmission | YES | ||
| 4 | co_negative | is negative command ? | 0 or 1 = negative | YES | |
| 5 | co_se | Select or Execute | 0 = Direct execute or 1 = Select before Execute | YES | |
| 6 | co_test | is test command ? | 0 or 1 = test | YES | |
| 7 | co_ts | timestamp | See Cause of Transmission | YES | |
| 8 | co_value | Value | YES | ||
| 9 | co_qu | is pulse defined ? | 0 or 1 = pulse defined | NO |
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