CIRCUTOR CBS8 (Available until stocks) User Manual
Page 34
----- Relay Station CBS-8 -------- --- Page No. 33
10.- CBS-8
COMMUNICATIONS...
----
Ed
Rd
16
17
18
19
20
21
22
23
24
25
26
27
A2
15
28
Power
Supply
CO
M
TEST 2
TEST 1
RL 1
R
L 2
RL 3
R
L 4
RL 5
R
L 6
RL 7
RL 8
A1
14
13
12
11
10
9
8
7
6
5
4
3
2
1
GND
Power
Supply
S1
S1
S1
S1
S2
S2
S2
S2
T2
T6
T3
T7
ALARM
2A 250V
S1
S1
S2
S2
S2
S2
S1
S1
T1
T5
T4
T8
(+)
RS485
One or several CBS-8 instruments may be connected to a
computer. As well as the usual operation of each instrument this system can
centralise data at one single point. The CBS-8 has a 485 series communication
output. If more than one instrument is connected on one line each one has to be
assigned a number or address (from 01 to 255) so that the central computer sends
data requests to those addresses.
10.1.- Please Note:
- PROTOCOL: MODBUS © (Question/Answer)
- CBS-8 DEFAULT CONFIGURATION: 001/9.600 / 8 bits / N / 1 bit
- Possible speeds : 4.800 - 9.600 - 19.200 bauds
- RS-485 output: Terminal No. Signal
12 --------- TX +
13 --------- TX --
14 --------- GND
- The RS-485 is connected by a plaited insulated communications
cable, three wire minimum, with a maximum distance between PC and
final peripheral of 1,200 metres. The CBS-8 uses an RS-485
communication line that can be connected to a maximum of 32
instruments in parallel (multi-point Bus) for each used COM of the
computer.