Flintec MCS-08 - Manual (Page 38)

MCS-08 Technical Manual, Rev. 1.04 December 2012 Page 38 of 52
9.2. Electrical Connections
RS232C and RS-485 connections are shown in figure 9.2.
Figure 9.2 – MCS-08MB serial interface connection
RS-232C Serial Interface
Use Setup via xFace
Baud rate 9600 (Default)
Length and parity 8 bit, no parity
Start / Stop bits 1 start bit and 1stop bit
RS-485 Serial Interface
Use Interfacing with PC or PLC
Data format Modbus RTU
Baud rate 1200 / 2400 / 4800 / 9600 (Default) / 19200 / 38400 / 57600 bps
Length and parity 8, no parity, 1 (Default) / 7, Odd, 1 / 7, Even, 1
Start / Stop bits 1 start bit and 1stop bit
Warning: Connect the shield to the reference ground.
Warning: Disconnect xFace PC software for Modbus-RTU interfacing
Power Supply Connection
See chapter 4.2.1
9.3. N-Bus Addressing
MCS-08 modules communicate to each other over the internal N-bus. The MCS-08xx gateway module is the
master of the internal N-bus. All other MCS-08 modules are slaves and have to be addressed to the gateway
module. The N-bus addressing can be done by using the xFace PC software (refer to chapter 5.3) or via setup
switch (refer to chapter 5.8).
9.4. Modbus RTU Setup
If the gateway is a MCS-08MB module and set up for Modbus, the MCS-08 system can be used as a Modbus
RTU slave in a RS-485 communication network. Fun
ction codes „0x03‟ and „0x10‟ are supported.
For the Modbus RTU setup please refer to this chapter, for the Modbus data structure please refer to chapter
5.11.
The Modbus RTU setup is done by the xFace software. Connect the gateway module with your PC via the RS-
232C service port on the module as shown in figure 9.2. After connecting the xFace software with the gateway
module select the Gateway tab. The Gateway tab is shown in figure 9.3. It displays all gateway information and
Modbus-RTU settings.