Funk-Electronic Piciorgros GmbH
TGW-100/TGW-100R
V2.71 - Page 14 of 59
2.3
Electrical Connections
2.3.1
Serial Interfaces
The TGW-100 has two serial data interfaces. The primary interface (COM) can be either
RS-232 or user-selectable RS-422/485. The AUX interface can be RS-232 or RS-485
(only).
The following parameters are user adjustable: baud rate in the range 300 - 57600 bps,
data word length 7 or 8 bits, odd / even / no parity, and 1 or 2 stop bits. The factory
setting is 9600 bps, 8 data bits, no parity, 1 stop bit.
If a frame error is detected, or if the parity bit does not conform to the setting, the
received data block is rejected.
Both serial interfaces are supplied as RS-232, unless ordered otherwise. The primary
interface is optionally available as a user-selectable RS-485 / RS-422 port, while the
AUX interface is optionally available as an RS-485 port. Note that the RS-485 / RS-422
interface does not have the CTS/RTS lines.
Pin No.
Pin Assignment: DB9, RS-232
2
TxD
Send data TGW-100
peripheral
3
RxD
Receive data TGW-110
peripheral
4
DTR
Shorted to Pin 6
5
GND
6
DSR
Shorted to Pin 4
7
RTS
Handshake TGW-100
peripheral
8
CTS
Handshake TGW-100
peripheral
Pin No.
Pin Assignment: DB9, RS-422
2
A
Re (input)
3
Z
Transmitter – (output)
5
GND
7
B
Receiver – (input)
8
Y
Trans (output)
Pin No.
Pin Assignment: DB9, RS-485
3
B
Transceiver –
5
GND
8
A
Trans
For the connection of the COM interface to a PC or PLC, use a standard 1:1 connector-
terminated cable (9-pin D-sub male to 9-pin D-sub female).
