sepam 20 user manual - Schneider Electric

PE50585
PE50586
Modbus communication Configuring the communication
interfaces
SFT2841: Modbus advanced parameters window.
SFT2841: communication configuration window for
ACE969FO.
PCRED301005EN - 06/2008
Configuring Modbus advanced parameters
The Sepam remote control mode is selected from the Advanced parameters window.
Advanced parameters Authorized values Default value
Remote control mode Direct or SBO (Select
Before Operate) mode
Direct
Configuring the physical layer of the ACE969-2 E-LAN port
The E-LAN port on the ACE969TP-2 and ACE969FO-2 communication interfaces is
a
2-wire RS 485 port.
The configuration parameters for the physical layer of the E-LAN port are:
b Sepam address
b transmission speed
b parity check type.
The number of stop bits is always fixed at 1.
If a configuration with Parity has been selected, each character will contain 11 bits
(1 start bit + 8 data bits + 1parity bit + 1 stop bit)
If a No Parity configuration has been selected, each character will contain 10 bits
(1 start bit + 8 data bits + 1 stop bit).
Parameters Authorized values Default value
Sepam address 1 to 247 1
Speed 4800, 9600, 19200 or
38400 bauds
38400 bauds
Parity None, Even or Odd Odd
Configuration tips
b The Sepam address MUST be assigned before Sepam is connected to the
communication network.
b You are also strongly advised to set the other physical layer configuration
parameters before making the connection to the communication network.
b Modifying the configuration parameters during normal operation will not disturb
Sepam but will reset the communication port.
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