17
Master Unit
CQM1-SRM21-V1
Master Unit for CQM1
A maximum of 128 I/O points available (Possible to
set 32, 64, or 128 I/O points).
Connects to a maximum of 16/32 Slaves.
Communications cycle time: 0.5 ms max. (at baud
rate 750 kbps).
Communications distance: Extended to 500 m
max. (at baud rate 93.75 kbps).
Connection to Analog Terminals now supported.
RC
Ordering Information
PC
Max. number of I/O points
Model
CQM1-series PC
128 points (64 inputs/64 outputs)
CQM1-SRM21-V1
Specifications
Communications Specifications
Communications method
CompoBus/S protocol
Coding method
Manchester coding method
Connection method
Multi-drop method and T-branch method (see note 1)
Communications baud rate
750,000 bps, 93,750 bps (see note 2)
Communications
cycle time
High-speed
comm nications
0.5 ms with 8 Slaves for inputs and 8 Slaves for outputs
cycle time
communications
mode
0.8 ms with 16 Slaves for inputs and 16 Slaves for outputs
Long-distance
comm nications
4.0 ms with 8 Slaves for inputs and 8 Slaves for outputs
communications
mode
6.0 ms with 16 Slaves for inputs and 16 Slaves for outputs
Communications cable
2-conductor VCTF cable (0.75 x 20)
Dedicated flat cable
Communications
distance
High-speed
communications
mode
VCTF cable:
Main line length:
100 m max.
Branch line length:
3 m max.
Total branch line length: 50 m max.
Flat cable:
Main line length:
30 m max.
Branch line length:
3 m max.
Total branch line length: 30 m max.
(When flat cable is used to connect fewer than 16 Slaves, the main line can be up to
100 m long and the total branch line length can be up to 50 m.)
Long-distance
communications
mode
VCTF cable::
Main line length:
500 m max.
Branch line length:
6 m max.
Total branch line length: 120 m max.
Max. number of connecting nodes
32
Error control checks
Manchester code check, frame length check, and parity check
Note:
1. A terminator must be connected to the point in the system farthest from the Master.
2. The communications baud rate is switched with the DIP switch.
Содержание 3G8B3-SRM00
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