MQTMC_* (Trigger message character format structure)
| MQTMC_STRUC_ID | TMCb |
| MQTMC_STRUC_ID_ARRAY | 'T','M','C','b' |
| MQTMC_VERSION_1 | bbb1 |
| MQTMC_VERSION_2 | bbb2 |
| MQTMC_CURRENT_VERSION | bbb2 |
| MQTMC_VERSION_1_ARRAY | 'b','b','b','1' |
| MQTMC_VERSION_2_ARRAY | 'b','b','b','2' |
| MQTMC_CURRENT_VERSION_ARRAY | 'b','b','b','2' |