Connection Parameters Needed for HMI/cMT Products to Communicate with HollySys LE/LM PLC using EBPro (EasyBuilder Pro)

Introduction

All Maple Systems HMIs programmed with EBPro (EasyBuilder Pro), including every cMT X Series and cMT Series model, are compatible with HollySys LE/LM PLC. Configure your Controller and HMI/cMT with the following parameters to establish reliable communication.

Supported Series: HollySys LE/LM series PLC

Website: http://www.hollysys.com/

HMI Setting

Parameters	Recommended Options	Notes
PLC type	HollySys LE/LM PLC
PLC I/F	RS485 2W
Baud rate	38400
Data bits	8
Parity	None
Stop bits	1
PLC sta. no.	1

Device Address

Bit/Word	Device type	Format	Range
B	`%IX`	DDDDo	0 ~ 81907
B	`%MX`	DDDDo	0 ~ 81907
B	`%QX`	DDDDo	0 ~ 81907
W	`%IW`	DDDD	0 ~ 8190
W	`%QW`	DDDD	0 ~ 8190
W	`%MW`	DDDD	0 ~ 8190
W	`%MD`	DDDD	0 ~ 8190
W	`%MR`	DDDD	0 ~ 8190

Wiring Diagram

NOTE: The serial port pin assignments may vary between HMI models.

RS-485 2W

The following is the view from the soldering point of a connector.

8-pin circular DIN connector pinout for HollySys LE/LM PLC serial communication port, pins numbered 1 through 8.

HMI	Direction	PLC
Pin assignments		RS485 2W 8P Mini-Din Male
Data-	↔ (bidirectional)	6
Data+	↔ (bidirectional)	5
GND	↔ (bidirectional)	7