Using the Modbus Ports

Modbus Port 2, Continued

Default

The factory-set default communication parameters for Modbus Port 2 are:

Parameters

λ

9600 baud

 

 

λ

EVEN parity

 

λ 8-bit RTU mode

 

λ

1 stop bit

 

λ Modbus network address 1

 

λ

RS232 protocol

Note: Processor Adapters support only one stop bit. If you change this default setting in the configuration software, the Processor Adapter will ignore the change.

Note: The default protocol must be changed from RS232 to RS485 for the 171 CCS 780 00,171 CCC 780 10 Processor Adapters or the port will not function. The 171 CCC 980 20 and 171 CCC 980 30 change automatically.

Auto-LogoutIf the Serial Option Adapter is used and the RS232 port is chosen, auto-logout is

Feature Only supported. If a programming panel is logged into the CPU via the serial port and its

with RS232 cable gets disconnected, the Processor Adapter automatically logs out the port. This auto-logout feature is designed to prevent a lock-up situation that could prevent other host stations from logging in on other ports.

Auto-logout is not available for any RS485 port, including the RS485 option on the Serial Option Adapter. The user must log out of the processor using the programming software.

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Schneider Electric Processor Adapter manual Modbus network address, RS232 protocol