55
Control
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. “LG” is a registered trademark of LG Corp.
HMI SCREENS
CAUTION
!
If the product enters the modbus remote mode, all the information can only be monitored via
HMI, and the actual operation of starting/stopping or changing the set temperature can only
be done through the external controller.
To make changes to control from HMI, change the control mode to “Local”.
CAUTION
!
CH10009 remote communication error will occur when the communication is disconnected
between the two controllers. When the communication is recovered, it will automatically
resume. If the remote modbus connection is not used, reset the power of the main PCB of
the unit to cancel the alarm.
The protocol details provided for modbus interlock of external device are as follows.
- Physical Layer : RS-485 Serial Line
- Mode : MODBUS RTU Mode
- Baud Rate : 9 600
- Parity : None Parity
- 1 Stop Bit
- Applied Function Code
Refer to the modbus protocol in the Appendix for the protocols provided.
Function
Code
Sub Function Function Name
Start Address form Master
Device
0x01 None Read Coil Register Address-1
0x02 None Read Discrete Input Register Address-10001
0x03 None Read Holding Register Address-40001
0x04 None Read Input Register Address-30001
0x05 None Write Single Coil Register Address-1
0x06 None Write Single Holding Register Address-40001
0xF1~FF Reserved for Exception Code
To Next Page
Loading...
