OPERATION MANUAL CompoBus/S

CQM1-SRM21-V1 Master Unit for CQM1 PLCs Section 4-4
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Pin 1: ON Pin 2: OFF Pin 3: OFF
Inputs: First word
Inputs: First word + 1
Outputs: First word
Outputs: First word + 1
Input Slave 1
Input Slave 3
Output Slave 1
Output Slave 3
Input Slave 0
Input Slave 2
Output Slave 0
Output Slave 2
PLC Word Allocation: 8 Words
The following diagram shows the I/O allocations when the DIP switch is set as
shown below.
Pin 1: OFF
or
Pin 2: ON Pin 3: OFF
Pin 1: ON Pin 2: ON Pin 3: OFF
Inputs: First word
Inputs: First word + 1
Inputs: First word + 2
Inputs: First word + 3
Outputs: First word
Outputs: First word + 1
Outputs: First word + 2
Outputs: First word + 3
Input Slave 1
Input Slave 3
Input Slave 5
Input Slave 7
Output Slave 1
Output Slave 3
Output Slave 5
Output Slave 7
Input Slave 0
Input Slave 2
Input Slave 4
Input Slave 6
Output Slave 0
Output Slave 2
Output Slave 4
Output Slave 6
Note When the number of points/node number is set to 8-point mode, each 16point
Slave (input or output) is treated as 2 node numbers and those bits are
allocated so that all 16 bits are in the same word, as described below.
When an odd node number has been set, the previous node number’s allocated
memory is also used.
When an even node number has been set, the next node number’s allocated
memory is also used.
For example, when a 16-output Slave’s node number is set to 3, the Slave
uses the bits for Output Slave 2 and Output Slave 3. When the node number
is set to 0, the Slave uses the bits for Output Slave 0 and Output Slave
1.
The Slave with 4 inputs or 4 outputs is regarded as one Slave Unit.
When an odd node number has been set:
Bits 8 to 11 are used and bits 12 to 15 are not used.
When an even node number has been set:
Bits 0 to 3 are used and bits 4 to 7 are not used.
Bits
Bits