Mitsubishi Electric QJ71MB91 User Manual page 367

Modbus interface module
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INDEX
[A]
A Series Module ................................................ App-2
Auto refresh setting ............................................. 8-22
Automatic communication function........................ 5-3
Automatic communication parameter ...... 7-4,8-17,9-1
Automatic communication status......................... 8-32
Automatic response function ............................... 5-17
[B]
Buffer memory list................................................ 3-13
[C]
Change ASCII input delimiter
(sub-function code: 03)........................................ 4-30
Checking QJ71MB91 status .............................. 11-11
CH1, 2 station No. setting (Switch 5)................... 6-23
Clear counters and diagnostic register
(sub-function code: 10)........................................ 4-33
Clear overrun counter and flag
(sub-function code: 20)........................................ 4-44
Communication speed/transmission setting
(Switch 2, 4)......................................................... 6-22
Communication status ......................................... 8-35
Communication status of QJ71MB91 ................ 11-17
[D]
Dedicated instruction ................................... 5-16,10-1
Default assignment parameters........................... 7-19
Diagnostics (FC: 08)............................................ 4-25
[E]
Error code.......................................................... 11-21
Error code list .................................................... 11-30
Error code storage area..................................... 11-21
Error log..................................................... 8-34,11-26
Exception code list............................................. 11-28
External dimensions ........................................ App-13
[F]
Force listen only mode (sub-function code: 04)... 4-31
Frame mode ........................................................ 4-11
Frame Specifications ........................................... 4-10
Function version .................................................... 2-8
[G]
Get Communications Event Counter (FC: 11)..... 4-45
Get Communications Event Log (FC: 12)............ 4-47
[H]
Hardware test ........................................................ 6-6
[I]
Initial Setting ........................................................ 8-15
Intelligent Function Module Switch Setting .......... 6-19
I/O signal list ........................................................ 3-10
[L]
Link operation function......................................... 5-21
Listen only mode..........................................A-16,4-31
[M]
Mask Write Register (FC: 22) .............................. 4-59
Master function ..............................................A-15,5-3
MODBUS device assignment function................. 5-18
MODBUS device assignment parameter.... 7-11,8-19,
9-4
MODBUS device assignment parameter status .. 8-31
MODBUS Protocol...................................... A-15,A-16
MODBUS protocol data unit formats ................... 4-15
MODBUS standard functions................................. 4-1
Mode setting (Switch 1, 3) ................................... 6-21
Monitor/test .......................................................... 8-24
[P]
Parameter setting .................................................. 9-1
Performance of master functions.......................App-7
Performance of the slave function ...................App-10
Processing time .................................................App-7
Program Example
For Normal System Configuration...................... 9-8
For use in MELSECNET/H remote I/O
network............................................................. 9-25
[R]
Read Coils (FC: 01) ............................................. 4-18
Read Discrete Inputs (FC: 02) ............................. 4-19
Read Exception Status (FC: 07) .......................... 4-24
Read File Record (FC: 20) (SC: 06) .................... 4-55
Read Holding Registers (FC: 03)......................... 4-20
Read input registers (FC: 04) .............................. 4-21
Read/Write Multiple Registers (FC: 23) ............... 4-60
Report Slave ID (FC: 17) ..................................... 4-53
Restart communications option
(sub-function code: 01) ........................................ 4-26
Return bus character overrun count
(sub-function code: 18) ........................................ 4-42
Return bus communication error count
(sub-function code: 12) ........................................ 4-36
Return bus exception error count
(sub-function code: 13) ........................................ 4-37
Return bus message count
(sub-function code: 11) ........................................ 4-35
Return diagnostic register
(sub-function code: 02) ........................................ 4-28
9
10
11
Index
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