YOKOGAWA Daqstation DX1000, User Manual

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IM 04L4B0-8E
I/O Messages
System Configuration on PLC
An I/O message is also called an Implicit message. An I/O message is used to transmit
pre-specified I/O data at intervals. An I/O message is exchanged via a connection path
which is first set in RSLinx and read into RSLogix. A connection path defines the IP
address of the DX, communication port of the PLC, and distinction of input/output.
A device, once configured in RSLinx, can be downloaded into an RSLogix project. The
DX is configured as a "Generic Ethernet Module" in RSLogix.
Instance ID
Each data on the DX corresponds to the instance ID of an Assembly object. In an I/O
message, use an instance ID to code the data on the DX to be accessed. The following
table lists instance IDs, sizes, and data types.
Type Number Operation type Instance ID Size Data type
Measurement
channel
00 – 048 Producer 0 92 (4 x 48) INT2
00 – 048 Producer 115 92 (4 x 48) FLOAT
Computation
channel
101 – 160 Producer 20 240 (4 x 60) INT2
101 – 160 Producer 125 240 (4 x 60) FLOAT
Communication
input data
C01 – C60 Producer / Consumer 0 240 (4 x 60) INT2
C01 – C60 Producer / Consumer 135 240 (4 x 60) FLOAT
External input
channel
20 – 00 Producer / Consumer 40 400 (4 x 00) INT2
0 – 400 Producer / Consumer 4 400 (4 x 00) INT2
40 – 440 Producer / Consumer 42 160 (4 x 40) INT2
20 – 00 Producer / Consumer 145 400 (4 x 00) FLOAT
0 – 400 Producer / Consumer 146 400 (4 x 00) FLOAT
40 – 440 Producer / Consumer 47 160 (4 x 40) FLOAT
20 – 00 Producer 150 400 (4 x 00) INT2
0 – 400 Producer 151 400 (4 x 00) INT2
40 – 440 Producer 152 160 (4 x 40) INT2
20 – 00 Producer 155 400 (4 x 00) FLOAT
0 – 400 Producer 156 400 (4 x 00) FLOAT
40 – 440 Producer 157 160 (4 x 40) FLOAT
- Configuration 90 0 -
- Producer / Consumer 9 0 -
Explanation
• The DX data can be accessed using the INT32 or FLOAT type. Data can be accessed
by the type based on the specified instance ID.
• The operation type "Producer" indicates a read-only instance and "Producer/
Consumer" indicates a read/write instance.
• For an external input channel, instance IDs 150 to 157 are for reading and 140 to 147
are for writing.
Data on the DX
See the explanation in the previous section on Explicit messages.