5
Chapter 2
Installation
2-1
Mechanical installation
The
sigma
due
Control Unit and the I/O modules are designed to be installed on
standard DIN rails.
As the CPU has, on board, a CAN termination, it must be installed at one end
of the CAN chain.
Up to 127 I/O modules can be connected in chain to each CPU. This value is the
theoretical limit, Ascon spa reccomends to never exceed the number of 32 units.
2-1-1
Installing modules and Removing modules
A complete description on how the modules can be mounted on or removed from
a DIN Rail can be found in the “
Control Unit CU-02 Installation Manual
”
[6]
.
2-2
Electrical installation
Refer to: “
Figure 1.2 -Control Unit I/O and Communication Ports
” “
Control Unit
CU-02 Installation Manual
”
[6]
for details.
2-2-1
Connect the communication cables
CANopen
remote I/O Port
For CANopen I/O modules connection (
X0
). I/O modules are connected with the
included cables in a daisy chain fashion. The RJ45 type connectors have the pinout:
Serial Port
RS232 service port (X1)
The connector X1 on the CPU module is an RJ45 type, with the following pinout:
USB service port (X1)
When installed , the connector X1 on the Contro Unit is a B type USB standard
connector. The pinout of this cable is meaningless as the connection is standard.
Ethernet
10baseT
For OpenPCS development station (
X2
). The connector on the CPU module is
an RJ45 type, with the following pinout:
Pin
1
2
3
4
5
6
7
8
Signal
CANH CANL CAN-GND NC NC CAN-SHLD CAN-GND
CAN-V+
Pin
1
2
3
4
5
6
7
8
Signal
NC
NC
NC
GND
RX
TX
NC
NC
Pin
1
2
3
4
5
6
7
8
Signal
TX+
TX-
RX+
NC
NC
RX-
NC
NC
