5.1. CAN connector LEDs
CC24 (Master)
CC23 (Slave)
CAN connector indicates line (yellow or
green LED at the connector)
Slave is not connected to master or
previous slave
All LEDs are off
CAN LED indicates the color of the
master line, the slave is connected to
The number LEDs indicate the slaves
order number (note: not the address –
see topology)
Slave is connected to master or previous
slave
5.2. Connection and Termination
Both CAN connectors are internally terminated by a 120 Ohm resistor. If two CC2x controllers are directly connected by a direct
assigned (no crossover) FTP Cat. 6 patch cable, no further termination is needed.
CAUTION!
CAUTION!
Do not connect both CAN connectors of a CC2x controller in any way, neither direct nor by building CAN ring
bus topology.
5.3. Connecting legacy crates (ECH238, ECH224, etc.)
CC2x controllers are able to connect legacy CAN-only driven iseg crates. So it is possible to extend existing hardware setups with
a new MMS series crate (ECH5xA, ECH4xA, ECH242, ECH244) and CC2x crate controller to access complete hardware by Ethernet
or WiFi with all major advantages of the integrated server hardware.
Legacy crates don't automatically configure their address. The address of the backplane (bank address) must be selected by a
rotary selector switch of the legacy's crate controller. Please note:
•
Pay attention that every legacy crate is configured to a unique address within a CAN line.
•
Modules labeled with a six digit serial number allocate one or two addresses depending on the serial number.
If there is at least one module in a legacy crate that's six digit serial number has a one at the last digit, only equal bank
addresses are allowed.
•
All modules and crate controllers in legacy crates must be configured to a CAN bitrate of 250 kBit/s
Each of the Masters CAN lines (yellow and green) can address up to 64 modules in legacy crates, which is 128 modules in total.
Crate Controller CC24/CC23 | Last change on: 14.04.2020 |
www.iseg-hv.com
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