Modbus Mapping Function; Functional Outline; Setting Parameter; Communication Mode Selection - Omron 3G3MX2 User Manual

ModBus mapping
B-5 ModBus mapping
B-5-1

Modbus mapping function

B-5-1-1

Functional outline

B-5-1-2

Setting parameter

B-5-1-2-1 P200 (Serial comms mode): Communication mode selection
B-5-1-2-2 P201-P210 (Modbus external register 1 to 10): External register select
B-5-1-2-3 P301-P310 (Modbus internal register 1 to 10): Internal register selection
An existing register number is allocated in an arbitrary register number.
The list of the communication that can use this function is shown below.
No. Communication
1 Option board
2 Modbus (RS485)
3 USB
Setting parameters of Modbus mapping function:
P200 (Serial comms mode): Communication mode selection
P201 to P210 (Modbus external register 1 to 10): External register selection
P211 to P220 (Modbus register format 1 to 10): Format of external register
P221 to P230 (Modbus register scaling 1 to 10): Scaling data
P301 to P310 (Modbus internal register 1 to 10): Internal register selection
The number of set registers is limited to 10.
Func. Code Name

Serial comms mode
00: Standard Modbus registers according with Appendix B-4 list.
01: Free mapping where special registers on parameters P201 to P210 could
be used.
When the setting is changed, new configuration will be reflected immediately.
(But only if inverter is not in RUN.)
Please don't access the register relevant to Modbus mapping at the time of
P200 data change to avoid unexpected operation.
P201 to P230, P301 to P310: When this parameters are modified is neces-
sary to recycle power supply for this changes to become effective.
Func. Code Name

Modbus external

register 1 to 10
Defines the addresses to be used by the external controller.
0000h is considered as not used.
Func. Code Name

Modbus internal register

1 to 10
Defines the internal register address that will be linked to external registers in
parameters P201 to P210.
0000h is considered as not used.
Settings
00: Standard
01: Free mapping
Settings
0000h to FFFFh
Settings
0000h to FFFFh
Section B-5
EU
00
EU
0000h
EU
0000h
347