INZ-TN5A1190-E i
1. COMMUNICATION FUNCTIONS ............................................................................................1
1.1 General................................................................................................................................................1
2. SPECIFICATIONS .......................................................................................................................2
2.1 Communication specifications............................................................................................................2
3. CONNECTION.............................................................................................................................3
3.1 Terminal allocation .............................................................................................................................3
3.2 Wiring .................................................................................................................................................4
4. SETTING OF COMMUNICATION CONDITION .....................................................................6
4.1 Set items..............................................................................................................................................6
4.2 Setting operation .................................................................................................................................6
5. MODBUS COMMUNICATION PROTOCOL............................................................................7
5.1 General................................................................................................................................................7
5.2 Composition of message .....................................................................................................................8
5.3 Response of slave station ..................................................................................................................10
5.4 Function code....................................................................................................................................11
5.5 Calculation of error check code (CRC-16) .......................................................................................12
5.6 Transmission control procedure........................................................................................................14
6. DETAILS OF MESSAGE ..........................................................................................................16
6.1 Read-out of word data [Function code:03H] ..................................................................................16
6.2 Read-out of read only word data [Function code:04H] .....................................................................18
6.3 Write-in of word data (1 word) [Function code:06H]........................................................................20
6.4 Write-in of continuous word data [Function code:10H] .................................................................21
7. ADDRESS MAP AND DATA FORMAT .................................................................................23
7.1 Data format .......................................................................................................................................23
7.2 Address map .....................................................................................................................................25
7.3 Supplement to address map ..............................................................................................................38
8. TROUBLESHOOTING..............................................................................................................39
CONTENTS
