Ronan X120 - Manual (Page 5)

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Output Relay:
•
Normally energized, SPST 2 A @ 24 VDC
•
Monitors internal logic, all power supplies and optional ground detection
Indicators (LED):
•
Power supplies available
•
Input test error
•
Transmit error
•
Run/status indication
•
Ground fault condition
Operating Temperature: 0-60
°
C (32-140
°
F)
Storage Temperature: -40-85
°
C (-40-185
°
F)
Minimum Sustained Data Transfer Rate: 190 events per second (at 19.2 K baud using Ronan proprietary protocol)
Specifications subject to change without notice.
1.0 MULTIPLEXER CONTROLLER MODULE X120-1000
The primary function of the controller board is to gather “event” data from 48 input channels and relay the
collected information to the Model X110 via RS422/485. This is done by continuous scanning of each of the eight
inputs with U7 (1-OF-8 DECODER/DEMULTIPLEXER). There are 8 outputs from U7 (CS0, CS1, CS2, CS3,
CS4, CS5, CS6, CS7) which are used to scan all the channels and to read the status of SW2 and SW3. The function
and the logical address of each output is shown in Figure 1.
IDENT. LOGIC ADDRESS FUNCTION
CS0 8000H READING DATA FROM CH. 1-8
CS1 8001H READING DATA FROM CH. 9-16
CS2 8002H READING DATA FROM CH. 17-24
CS3 8003H READING DATA FROM CH. 25-32
CS4 8004H READING DATA FROM CH. 32-40
CS5 8005H READING DATA FROM CH. 41-48
CS6 8006H READING DATA FROM SW2
è 1-8
CS7 8007H READING DATA FROM SW3
è 1-8
Figure 1
Each time the controller board scans all the input channels, it stores all the data in the internal memory and makes
filter calculations (refer to filtering section for more information). After filter processing, all the status changes of
inputs are transferred to the transmit buffer and ready to be transmitted. If the old status change of any input has
not been transmitted from the transmit buffer before the status of the same input changes, the controller board
would not register the new status change of that input channel. Therefore the old status of input channels would
not be lost before being transmitted to the X110 system.