Electro-Voice Contractor Precision CPS4.5 Owner's Manual page 16

CONTRACTOR PRECISION SERIES
Amplifier & Channel Labels
Control Ports and Job Numbers
2 CAN ADDRESS Selector Switch
The two address selector switches are for setting the network address of the RCM-810. CAN networks
support addresses in the range of 01 to 250 (FA hex). Addressing has to be carried out in the hexadecimal
number system. The LOW selector switch sets the lower digit, while HIGH sets the higher digit.
CAUTION:
Each address may exist only once in a system. Otherwise, network conflicts may arise.
HIGH
Address 0 (00 hex, delivery status) disables remote communication between the RCM-810 and the bus. The module does not
appear in the system, even though it is physically connected to the CAN-bus.
3 STATUS LED
The STATUS LED is for monitoring the communication on the CAN bus. The LED blinks rhythmically every 3
seconds, when the module's address is set to "00", which means that it is disconnected from the CAN bus
and software control. The LED blinks rhythmically in intervals of one second, when an address in the range of
01 to 250 has been assigned to the module and there has not yet been any activity on the CAN bus. As soon
as communication on the CAN bus is recognized, the LED lights for at least 100 ms, when the power
amplifier sends data on the CAN bus.
4 REMOTE CAN BUS Connection
The RCM-810 module provides two RJ-45 sockets for connecting to the REMOTE CAN BUS. These sockets
are connected in parallel and serve as inputs as well as for daisy-chaining the devices on the remote
network. Cabling in a rack system can be established using commercially available RJ-45 network cables.
However, CAN guidelines have to be observed for longer cable lengths. Both ends of the CAN bus must be
terminated using 120 Ω terminating plugs.
The CAN bus allows using different data rates, whereas the data rate is inversely proportional to the bus
length. For smaller network setups, data rates can be as high as 500 kbit/s. For broader networks, reducing
the data rate becomes necessary (down to the minimum data rate of 10 kbit/s).
NOTE:
The data rate of the CAN bus is preset to 10 kbit/s.
16 Owner's Manual
Parameter
CAN-Bus data rate
Power-On-Delay
Supervision
VLD
Table 4.1: Factory Settings of RCM-810
LOW Address
0 0 Stand-alone
0 1...F 1...15
1 0...F 16...31
2 0...F 32...47
3 0...F 48...63
4 0...F 64...79
5 0...F 80...95
6 0...F 96...111
7 0...F 112...127
Table 4.2: CAN addresses
Value
10 kbit/s
0 ms
RCM-810 Module, RCM-810 Input, RCM-810 Output
not configured
not configured
deactivated
HIGH LOW
8 0...F
9 0...F
A 0...F
B 0...F
C 0...F
D 0...F
E 0...F
F 0...A
F B...F
Address
128...143
144...159
160...175
176...191
192...207
208...223
224...239
240...250
reserved