1 hints on operation 5, 1 connecting the interface 5, Rs485/422 interface 5 – West Control Solutions KS 800 ISO1745 Interface Manual User Manual
Page 5: Hints on operation, Connecting the interface, 1hints on operation, Fig.: 1 connection examples rs422 interface, Fig.: 2 connection examples rs485 interface, Master f.i. iqt605, Max. 1000m
1
Hints on operation
Multi-temperature controller version KS800-RS is provided with a serial, bussable RS485 interface which
can be used for transmission of process, parameter and configuration data. Connection is via (a) 9-pole
sub-D socket(s)(connector(s)). The serial communication interface permits connections to supervisory PLCs,
visualization tools, etc.
An RS485/422 hardware interface is realized. The protocol available on this hardware is:
w
the PCI protocol, which is based on an ISO 1745 frame,
Communication is according to the master/slave principle. KS800 is always slave. The software of the serial
interface is implemented as standard in the firmware.
Another standard interface is the PC interface. This interface is used for connecting an engineering tool,
which runs on an external PC.
1.1
Connecting the interface
Version KS800-RS offers an RS485 or RS422 interface. ‘RS422’ as available in this product means an
RS485 4-wire interface. A driver for reception and a driver for sending are available.
On the 2-wire RS 485 interface, reception and transmission lines must be galvanically connected by the user.
If an RGND connection is required with an RS485 adjustment, a 100 Ohm resistor must be mounted across
terminal 5 (RGND) and terminal 5 of the interface converter by the user.
The outputs are galvanically isolated.
The interface mode is half-duplex.
Installing appropriate cables must be done by the user, whereby the general cable specifications according to
EIA RS485 must be taken into account.
Hints on operation
5
9499 040 49411
5
9
4
8
3
7
2
6
1
Master
f.i. IQT605
5
5
9
9
4
4
8
8
3
3
7
7
2
2
6
6
1
1
TXD-B (-)
GND
RXD-B (-)
RXD-A (+)
TXD-A (+)
GND
TXD-A
RXD-B
RXD-A
TXD-B
5
5
9
9
4
4
8
8
3
3
7
7
2
2
6
6
1
1
KS800
HEI
Z
1
HEI
Z
2
HEI
Z
3
HEI
Z
4
HEI
Z
5
HEI
Z
6
HEI
Z
7
HEI
Z
8
KÜHL
1
KÜHL
2
KÜHL
3
KÜHL
4
KÜ
5
/
I1
KÜ
6
/
I2
KÜ
7
/
I3
KÜ
8
/
I4
PO
W
E
R
COM
AL
1
AL
2
AL
3
Attention! No galvanic isolation.
Fig.: 1 Connection examples RS422 interface
5
5
9
9
4
4
8
8
3
3
7
7
2
2
6
6
1
1
5
5
9
9
4
4
8
8
3
3
7
7
2
2
6
6
1
1
KS800
HEI
Z
1
HEI
Z
2
HEI
Z
3
HEI
Z
4
HEI
Z
5
HEI
Z
6
HEI
Z
7
HEI
Z
8
KÜHL
1
KÜHL
2
KÜHL
3
KÜHL
4
KÜ
5
/
I1
KÜ
6
/
I2
KÜ
7
/
I3
KÜ
8
/
I4
PO
W
E
R
COM
AL
1
AL
2
AL
3
max. 1000m
Master, via
Interface-
converter
9404 999 81944
DATA-B
DATA-A
DATA-B (-)
DATA-A (+)
Fig.: 2 Connection examples RS485 interface