202
34
2 2
009
-0
4
14
WCS-PNG110
Commissioning
6.3
Connecting the reading heads
If you install several WCS reading heads together on one interface module, the reading heads
must have different addresses. This will allow the PLC to allocate the data to the correct
reading heads. If you connect only one WCS reading head to the interface module, this reading
head is always given the address 0. You can connect up to four WCS reading heads to the
interface module via an RS 485 line. The default address of the reading head as delivered is 0.
If you install several WCS reading heads together on one interface module, the reading heads
must have different addresses. This will allow the PLC to allocate the data to the correct
reading heads. If you connect only one WCS reading head to the interface module, this reading
head is always given the address 0. You can connect up to four WCS reading heads to the
interface module via an RS 485 line. The default address of each reading head as delivered is
0. Refer to the configuration instructions for the reading head if you need to change the address
of the reading head.
The number of connected reading heads and their mode of operation is configured by the
hardware project setting using the GSD file. For hardware planning, please use the GSD file
which can be downloaded from our website: http://www.pepperl-fuchs.com (see chapter 6.5).
Connecting the reading head
1.
Connect the power supply for the reading head to terminals 1 and 2 of the 4-pin connector
X2 on the interface module.
2.
Connect the RS 485 data line to the reading head on terminals 4 and 5 of connector X1.
If you operate the WCS-PNG110 interface module at the beginning or end of the RS 485 bus,
you must activate the RS 485 terminator.
Activating the RS 485 terminator
1.
To use with an RS 485 interface, slide the
“
Rx 422
”
switch to OFF.
2.
To activate the RS 485 terminator, slide the
“
Tx 422
”
switch to ON.
3.
To deactivate the RS 485 terminator, slide the
“
Tx422
”
switch to OFF.
4.
If only one reading head is connected, you must always activate the RS 485 terminator.
Slide the
“
Tx 422
”
switch to ON.
Terminal pin reading head
Terminal interface module
WCS2B
WCS3B
2
1
X2-1
4
2
X1-4
1
4
X1-5
3
3
X2-2
Table 6.1: Connection of WCS reading heads
