WAGO-I/O-SYSTEM 750
MODBUS – CODESYS 2 281
750-8207 PFC200 CS 2ETH RS 3G
Manual
Draft version 1.2.1 from 2017-09-13, valid from FW Version 02.06.20(09)
Table 205: MODBUS RTU Settings
Parameters Explanation
RTU mode
Enable for the MODBUS RTU mode
Off
*
Operation not permitted
Active
Operation possible
Device ID
Device ID (device address) for the tty device
1
*
min. device ID
247
max. device ID
Maximum
response time
Response timeout for a request in [ms]
2000
min. response time = 2 seconds. If this value is
set lower than 2 seconds, it will be corrected
internally to 2 seconds.
5000
*
Default = 5 seconds
4294967295 max. response time > 71 hours.
Interface
Device name
“dev/…”
Name of the tty in the string
“dev/ttyO0”
*
Standard tty
Baud rate
Communication baud rate
1200 baud
1200 baud min. transmission speed
2400 baud
2400 baud
4800 baud
4800 baud
9600 baud
9600 baud
19200 baud
19200 baud
38400 baud
38400 baud
57600 baud
57600 baud
115200 baud
*
115200 baud, max. transmission speed
Stop bits
Number of stop bits
1 stop bit
*
1 stop bit in the frame; must be used when even
or odd parity has been selected.
2 stop bits
2 stop bits in the frame; must be used when
“None” has been selected for parity.
Parity
Parity check
None
No parity check performed; 2 stop bits must be
selected in the configuration for this setting.
Even
*
Even parity
Odd
Odd parity