![background image](http://html1.mh-extra.com/html/omron/3g3ax-mx2-crt-e/3g3ax-mx2-crt-e_user-manual_740779111.webp)
4 - 17
4 Remote I/O
CompoNet Communications Unit User’s Manual (I582-E1)
4-4 Sp
ecial I/O and
Flexi
ble F
o
rmat
4
4-
4-1 F
reque
ncy Refer
ence/RUN C
ommand Selection
4-4
Special I/O and Flexible Format
Special I/O and Flexible Format are types of Remote I/O that utilize Modbus communication.
This means that, only when using Special I/O or Flexible Format, you specify Modbus communication
as an input method for the frequency reference and RUN command.
Destination Selection Parameter Settings
Special I/O is OMRON's unique Remote I/O not defined in the CompoNet specifications.
This Remote I/O enables access to Inverter's internal parameter areas via Modbus communication.
Special I/O enables you to read/write data for two consecutive register numbers by setting the Function
Code.
In addition, you can also read/write data to/from more than one register by switching the Function
Code/Register No. at fixed intervals using a host program. In this case, on the host, check that the reg-
ister numbers match before handing the communications. Once the register number set for output
matches the register number displayed for input, proceed to the next Register No. setting step.
Output Format (CS1/CJ1-series
→
Inverter)
4-4-1
Frequency Reference/RUN Command Selection
Parameter
Description
Setting
A001
1st Frequency Reference Selection
03: Modbus communication (Modbus-RTU)
A002
1st RUN Command Selection
4-4-2
Special I/O (100/150)
Special Remote Output Assembly ID: 100 Dec (64 hex)
Word
No.
Byte
No.
Bit Allocation
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
n
0
Function Code
1
(Set 0.)
n + 1
2
First Register No. (Low byte)
3
First Register No. (High byte)
n + 2
4
Data 0 (Low byte)
5
Data 0 (High byte)
n + 3
6
Data 1 (Low byte)
7
Data 1 (High byte)
Summary of Contents for 3G3AX-MX2-CRT-E
Page 94: ...3 Network Startup 3 36 CompoNet Communications Unit User s Manual I582 E1...
Page 118: ...4 Remote I O 4 24 CompoNet Communications Unit User s Manual I582 E1...
Page 134: ...5 Message Communications 5 16 CompoNet Communications Unit User s Manual I582 E1...
Page 167: ...I 1 I CompoNet Communications Unit User s Manual I582 E1 Index...
Page 171: ......