WAGO-I/O-SYSTEM 750 XTR
Device Description 15
750-652/040-000 Serial Interface RS-232/RS-485 XTR
Manual
Version 1.3.0
3
Device Description
The 750-652/040-000 I/O module allows the optional connection of devices with a
RS-485, RS-422 or RS-232 interface.
It also provides gateways between the serial interface and the fieldbus systems
supported by the WAGO-I/O-SYSTEM 750 XTR.
No higher protocol level is required by the module. Communication is completely
transparent to the fieldbus master, which provides a wide range of applications for
the serial interface. If required, communication protocols can be programmed
flexibly in the fieldbus master.
The 2560 byte input buffer provides for high data baud rates. At lower baud rates,
the data received in lower priority tasks is evaluated without data loss.
The 512 byte output buffer provides fast transmission of larger data strings.
The operating mode of the I/O module can be configured using the WAGO-I/O-
CHECK
startup tool. Learn what version on WAGO-I/O-
CHECK
you need in the
table “WAGO-I/O-
CHECK
Minimum Requirements” in the “Commissioning”
section.
The standard operating mode is RS-485 half-duplex.
The standard data transmission is performed at 9600 baud. 1 start bit, 8 data
bits, and 1 stop bit are sent. There is no parity generation and dataflow control.
Before starting operation, the connections of the I/O module 750-652/040-000
must be cabled appropriately (see section “Connect Devices” > … > “Connection
Examples”).
In RS-232 mode, the interface works in accordance with the TIA/EIA-232-F and
CCITT V 28/DIN 66259-1 standards.
In RS-485/RS-422 mode, the interface works in accordance with the TIA/EIA-485-
A, DIN 66259 standards.
The connected device can communicate directly with the control unit via the
fieldbus coupler/controller used.
The active communication channel works independent of the fieldbus system used
in full or half-duplex operation at up to 115200 baud.
In the data flow control through RTS/CTS in RS-232 mode, a lead time or follow-on
time can be configured for the I/O module 750-652/040-000 for the RTS signal.
Direct data exchange between different fieldbus nodes of the 750 series is
possible in conjunction with a second I/O module 750-652/040-000.
The I/O module 750-652/040-000 can be configured as a DMX device at a baud
rate of 250 kBits/s. The I/O module can be operated as a DMX sender with
