15
3.12. Connecting The Serial
Interface RS 485
An external operating component DCU 001/DCU 600 o
orr
HPU 001 o
orr – using a level converter – an external computer
can be connected via the connection ”RS 485” on the TC 750
with the use of a shielded 8 pole modular connecting cable
contained with the delivery.
PIN
Arrangement
1
not connected
2
+24V output (
≤
210 mA loading
capacity)
3
not connected
4
not connected
5
RS 485: D+ (DO / RI)
6
Gnd
7
RS 485: D- (DO / RI)
8
not connected
RS 485
1 ... 8
RT
RT
Level Converter
TC
PC
TC
5:D+, 7:D-
The electrical connections are internally optically decoupled.
Description
Value
Serial Interface Type:
RS 485
Baud rate:
9600 baud
Data file word length:
8 bit
Parity:
no (no parity)
Start bits:
1
Stop bits:
1..2
(View from the
plug side of the
TC 750)
It is possible to connect an RS 232 (e.g. PC) via
a level converter (please see Section 11.
Accessories).
☞
PLEASE NOTE
All units connected to the bus must have differing serial
interface addresses (parameter 797).
The group address of the TC 750 is 960.
Only safety low voltages (SELV) may be
connected to Serial Interface RS 485 .
All switched on remote functions have priority over the serial
interface functions.
Please refer to the separate Operating Instruc-
tions PM 0488 BN for more detailed
information on operations via Serial Interface
RS 485 and its electronic data.
Profibus DP Gateway TIC 250 is available (see Section 11.
Accessories) for connecting an Electronic Drive Unit TC 750
to a Profibus DP.
Please refer to the respective Operating Instructions
PM 0599 BN for detailed information on the operation of the
TIC 250.
☞
PLEASE NOTE
WARNING
Connecting The RS 485
Connecting to a fixed bus system:
➡
Connect all units with D+ (pin 5/RS 485) and
D- (pin7/RS 485) to the bus.
➡
The bus must be completed at both ends.
The connections should be made in accordance with the
specification of the Serial Interface RS 485.
The serial interface is galvanically and safely separated from
the maximum supply voltage from the TC 750.
Connection
DCU 001
without power supply
PC
external
computer
DCU 600
with power supply
or
or
TC 750
HPU 001
RS 485
RS 232
level converter
RS 485
RS 485
RS 485
RS 485
Connecting the Serial Interface RS 485
