Introduction

All Maple Systems HMIs programmed with EBPro (EasyBuilder Pro), including every cMT X Series and cMT Series model, are compatible with SAIA PCD S-BUS Mode. Configure your Controller and HMI/cMT with the following parameters to establish reliable communication.

Supported Series: SAIA PCD series S-Bus mode

HMI Setting

Parameters	Recommended	Options	Notes
PLC type	SAIA PCD S-BUS Mode		PDS driver
PLC I/F	RS232	RS232, RS485
Baud rate	9600	9600, 19200, 38400
Data bits	8	7, 8
Parity	None	Even, Odd, None
Stop bits	1	1
PLC sta.	0	0-255

PLC Setting

Communication mode	9600,N,8,1 (default)
RS232	Port 0-Type: RS232
RS485 2W	S-BUS Mode: Data(S2), Port 1-Type: RS485

PLC Configuration Steps

Open Saia Project Manager
Open Saia Project Manager SP2.0.150 and create a new project.
Enter Project Name
Give a project name in the New Project dialog.
Create New Project
The new project is created and appears in the Project Tree.
Open Online Settings
Right-click Online Settings in the Project Tree and select Open.
Select PGU Channel
In the Online Settings dialog, select PGU from the channel list.
Open Device Configurator
Right-click Device Configurator in the Project Tree and select Open.
Change Device Type
In the Saia Device Configurator, click Change Device Type to select your PLC model.
Open Onboard Communications Properties
Select RS232 (PGU) in Type, then right-click Onboard Communications and select Properties.
Enable Series S-Bus Port
Select Yes in Series S-Bus Port: Enabled.
Set Parameters and Upload
Set parameters in S-Bus Mode and Timing, then click the Upload Configuration button to upload to the PLC.
Select S-Bus in Online Settings
Go to Online Settings u0026gt; Open and select S-Bus to finish the PLC settings.

Device Address

Bit/Word	Device type	Format	Range	Memo
B	Flag	`DDDDD`	0 ~ 14335
B	Output	`DDDD`	0 ~ 8091
B	Input	`DDDD`	0 ~ 8091
B	Reg_Bit	`DDDDdd`	0 ~ 16383	dd: Bit no. (00~31)
B	DBn_Bit	`DDDDDDDDDdd`	0 ~ 536016383
DW	Register	`DDDDD`	0 ~ 16383
DW	Counter	`DDDD`	0 ~ 1599
DW	Timer	`DDDD`	0 ~ 1599
DW	Reg_Float	`DDDDD`	0 ~ 16383	Support single float point
DW	DBn	`DDDDDDDDD`	0 ~ 536016383
DW	DB_String	`DDDDDDDDD`	0 ~ 536016383
DW	R_String	`DDDDD`	0 ~ 16383
DW	DB_Float	`DDDDDDDDD`	0 ~ 536016383
DW	Text	`DDDDDDD`	0 ~ 1638300

Wiring Diagrams

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

Diagram 1: RS-232 (SAIA PCD PGU Port RS232 9P D-Sub)

HMI	Direction	PLC
Pin assignments		RS232 9P D-Sub Male
Rx	↔ (bidirectional)	3
Tx	↔ (bidirectional)	2
GND	↔ (bidirectional)	5
	↕︎ (tie)	7 8

Diagram 2: RS-485 2W (SAIA PCD1 Port #1 (Port #0) Terminal)

HMI	Direction	PLC
Pin assignments		SAIA PCD1 Port #1 (Port #0) Terminal
Data-	↔ (bidirectional)	11(29)
Data+	↔ (bidirectional)	12(28)
GND	↔ (bidirectional)	GND

Connection Parameters Needed for HMI/cMT Products to Communicate with SAIA PCD S-BUS Mode using EBPro (EasyBuilder Pro)