Mitsubishi QJ71MB91 User Manual

4 - 5
4.1 MODBUS(R) Standard Function Support List
4
MODBUS(R) STANDARD FUNCTIONS
(2) Standard function support list for the master and slave functions
The following table indicates a standard function support list classified by the master
and slave functions of the QJ71MB91.
: Supported : Not supported
* 1 Since the MBREQ instruction allows users to create request message frames, function codes other
than the above can be also sent. ( Section 10.3)
(Continued on next page)
Table4.2 Standard function support list for the master and slave functions
Function
code
(Sub code)
Sub-function
code
Function
Master function
Slave
function
Automatic
communication
function
MBRW
instruction
MBREQ
instruction
*1
01 - Read coils
02 - Read discrete inputs
03 - Read holding registers
04 - Read input registers
05 - Write single coil
06 - Write single register
07 - Read exception status
08
00 Return query data
01 Restart communications option
02 Return diagnostic register
03 Change ASCII input delimiter
04 Force listen only mode
10 Clear counters and diagnostic register
11 Return bus message count
12 Return bus communication error count
13 Return bus exception error count
14 Return slave message count
15 Return slave no response count
16 Return slave NAK count

Mitsubishi QJ71MB91 Specifications

General

Brand	Mitsubishi
Model	QJ71MB91
Category	Controller
Language	English