Pepperl+Fuchs ICDM-RX/MOD Manual page 36

ICDM-RX/MOD User Manual
Serial Menus
Parity
(Default = None)
Data Bits (Default = 8)
Stop Bits (Default = 1)
Flow Control (Default =
None)
Terminating Resistor
(Only displays on
applicable models)
DTR Mode (Default =
Off)
Rx Timeout Between
Packets (ms) (Default =
200)
Discard Rx Packets With
Errors (Default = On)
Modbus Settings
Serial Port Protocol
(Default = Modbus/RTU-
to-Slaves)
36
Serial Configuration Page (Continued)
None
Even
Odd
5, 6, 7, 8
1 or 2
RTS/CTS
XON/XOFF
Half Duplex
To ensure the best signal integrity on a long distance high-speed RS-422 or RS-
485 network, sometimes it is required to place a 120Ω termination resistor
between each of the transmit differential pair or receive differential pair. Signal
reflection is reduced and a reliable communication is ensured by placing the 120Ω
termination resistor. Using the software, you can place 120Ω termination resistors
between the signals shown below:
• RS-422 Mode
- Between TxD+ and TxD- (Pin 5 and 7)
- Between RxD+ and RxD- (Pin 4 and 2)
• RS-485 - Between TxD/RxD+ and TxD/RxD- (Pin 5 and 7)
0=Off
1=On
Receive time-out (0-65535) between packets in msec. This is the maximum
spacing between received bytes allowed before the received Modbus serial
message is expected to be complete.
On or Off: If selected, the ICDM-RX/MOD drops all packets received with parity,
framing, or overrun errors.
Note: Modbus/RTU messages with invalid CRCs and Modbus/ASCII messages
without correct start and end of transmission characters are always
discarded independent of this setting.
The Modbus Protocol, setting for this serial port:
• Modbus/RTU-to-Slaves – Configures the serial port to communicate to
Modbus/RTU slaves.
• Modbus/ASCII-to-Slaves – Configures the serial port to communicate to
Modbus/ASCII slaves.
• Modbus/RTU-to-Master – Configures the serial port to communicate to a
Modbus/RTU master.
• Modbus/ASCII-to-Master – Configures the serial port to communicate to a
Modbus/ASCII master.
• Modbus/RTU-to-Master/Slaves – Configures the serial port to communicate to
a serial bus with a Modbus/RTU master and Modbus/RTU slave(s).
• Modbus/ASCII-to-Master/Slaves – Configures the serial port to communicate
to a serial bus with a Modbus/ASCII master and Modbus/ASCII slaves.