© Panasonic Industrial Devices SUNX Co., Ltd. 2016
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Functions
3-8 MODBUS Communication (Non-safety)
WARNING
Communication information is not available for safety control.
Using MODBUS RTU protocol, PLC, etc., can obtain monitor information (safety input status,
control output status, error information, error description, and error log) from this device.
Master station (PLC, etc.) issues a command (command message) to the slave station (this de-
vice), and the slave station makes a response (response message) according to the command.
For this device, up to eight units can be connected as slave stations.
The communication settings are configured by using DIP switches for RS-485 on the bottom of
this device or software tool.
3-8-1 MODBUS RTU Specification
Item
Setting range
Factory default
Interface
RS-485
Maximum transmission
distance
100m
Data length
8 bits
Communication preference
setting
Either DIP switches take or software tool
takes precedence
DIP switches take precedence
Parity bit presence
With or without
With
Parity bit type
Odd / even
Odd
Stop bit
1 bit / 2 bits
1 bit
Communication address
1 to 247
1
Baud rate
9,600 bps
19,200 bps
38,400 bps
57,600 bps
115,200 bps
9,600 bps
Settings by DIP switches for RS-485 (all OFF at factory setting)
DIP switches
DIP switches
No.
Setting item
Input status
OFF
ON
1
Communication preference
setting
DIP switches take
precedence
Software tool takes
precedence
2
Parity bit presence
With
Without
3
Parity bit type
Odd
Even
4
Stop bit
1
2
5
Communication address 1
SW5: OFF, SW6: OFF
Communication address 2
SW5: ON, SW6: OFF
6
Communication address 3
SW5: OFF, SW6: ON
Communication address 4
SW5: ON, SW6: ON
7
Baud rate
9,600 bps
19,200 bps
8
Unused
-
-
9
Unused
-
-
10
Unused
-
-