Hardware Manual for the PCD2.M5 Series│Document 26/856; Version EN 12│2014-07-24
Saia-Burgess Controls AG
Connections to PCD2.M5_
PCD2.M5_ Classic CPUs and expansion housings
3-29
3
Terminal block for power supply, watchdog, Port#0, PGU
Pin
signal
Explanation
29 RxD/
TxD-N D
A
(green)
Port#0
also as PGU
;
RS-485
up to 115.2kBd; usable as free
user interface
28 RxD/
TxD-P /D
B (red)
27
-
26
WD
Watchdog
25
WD
24
-
Voltage supply
23
-
22
+
21
+
20
+
RS-485 terminator switch
Switch
position
Designation
Explanation
up
O
without termination resistors
down
C
with termination resistors
Ethernet (PCD2.M5540 only)
For these Ethernet connections, a new 10/100 Mbits switch
is used, which switches automatically between the two speeds.
Both sockets can be used independently of each other.
The RJ-45 shield is AC-coupled and so fully insulated. ETH1
and
ETH2 are independently AC-coupled.
Sockets:
2 x RJ-45 positioned vertically, metal housing, 2 LEDs
orange:
Link and activity
green: Speed 10 or 100 Mbits
USB programming port
USB 1.1 slave device