size = 1 byte
| Byte | Identifier | Value |
|---|---|---|
| byte1 | ack | 0xE5 |
size = 5 byte
| Byte | Identifier | Value |
|---|---|---|
| byte1 | start | 0x10 |
| byte2 | control | ... |
| byte3 | address | ... |
| byte4 | chksum | ... |
| byte5 | stop | 0x16 |
size = 9 byte
| Byte | Identifier | Value |
|---|---|---|
| byte1 | start1 | 0x68 |
| byte2 | length1 | ... |
| byte3 | length2 | ... |
| byte4 | start2 | 0x68 |
| byte5 | control | ... |
| byte6 | address | ... |
| byte7 | ctl.info | ... |
| byte8 | chksum | ... |
| byte9 | stop | 0x16 |
size = N >= 9 byte
| Byte | Identifier | Value |
|---|---|---|
| byte1 | start1 | 0x68 |
| byte2 | length1 | ... |
| byte3 | length2 | ... |
| byte4 | start2 | 0x68 |
| byte5 | control | ... |
| byte6 | address | ... |
| byte7 | ctl.info | ... |
| byte8 | data | ... |
| ... | ... | ... |
| byteN-1 | chksum | ... |
| byteN | stop | 0x16 |
| Mode 1 | Mode 2 | Application | Definition in |
|---|---|---|---|
| 51h | 55h | data send | EN1434-3 |
| 52h | 56h | selection of slaves | Usergroup July 93 |
| 50h | application reset | Usergroup March 94 | |
| 54h | synronize action | suggestion | |
| B8h | set baudrate to 300 baud | Usergroup July 93 | |
| B9h | set baudrate to 600 baud | Usergroup July 93 | |
| BAh | set baudrate to 1200 baud | Usergroup July 93 | |
| BBh | set baudrate to 2400 baud | Usergroup July 93 | |
| BCh | set baudrate to 4800 baud | Usergroup July 93 | |
| BDh | set baudrate to 9600 baud | Usergroup July 93 | |
| BEh | set baudrate to 19200 baud | suggestion | |
| BFh | set baudrate to 38400 baud | suggestion | |
| B1h | request readout of complete RAM content | Techem suggestion | |
| B2h | send user data (not standardized RAM write) | Techem suggestion | |
| B3h | initialize test calibration mode | Usergroup July 93 | |
| B4h | EEPROM read | Techem suggestion | |
| B6h | start software test | Techem suggestion | |
| 90h to 97h | codes used for hashing | longer recommended | |
| ... | ... | ... | ... |
| 70h | report of general application errors | Usergroup March 94 | |
| 71h | report of alarm status | Usergroup March 94 | |
| 72h | 76h | variable data respond | EN1434-3 |
| 73h | 77h | fixed data respond | EN1434-3 |