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CQM1-SRM21-V1 Master Unit for CQM1 PLCs
Section 4-4
Pin 1: ON
Pin 2: OFF
Pin 3: OFF
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
Pin 2: ON
Pin 3: OFF
or
Pin 1: ON
Pin 2: ON
Pin 3: OFF
Note
When the number of points/node number is set to 8-point mode, each 16-
point 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 al-
located memory is also used.
When an even node number has been set, the next node number’s allocat-
ed 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 num-
ber 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.
Inputs: First word
Inputs: First word + 1
Bits
Input Slave 0
Input Slave 2
Input Slave 1
Input Slave 3
Outputs: First word
Outputs: First word + 1
Output Slave 0
Output Slave 2
Output Slave 1
Output Slave 3
Inputs: First word
Inputs: First word + 1
Inputs: First word + 2
Inputs: First word + 3
Bits
Input Slave 0
Input Slave 2
Input Slave 4
Input Slave 6
Input Slave 1
Input Slave 3
Input Slave 5
Input Slave 7
Outputs: First word
Outputs: First word + 1
Outputs: First word + 2
Outputs: First word + 3
Output Slave 0
Output Slave 2
Output Slave 4
Output Slave 6
Output Slave 1
Output Slave 3
Output Slave 5
Output Slave 7