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CS1W-DRM21-V1

CS-series DeviceNet Unit

CS1W-DRM21-V1

A DeviceNet Unit for the CS Series That Boasts Industry-leading Performance and Functions

Item list of CS1W-DRM21-V1

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last update: August 21, 2013

Communications Specifications

Item Specifications
Communications protocol DeviceNet
Connection methods Multi-drop and T-branch connections can be combined (for trunk and branch lines) *1
Baud rate 500 Kbps, 250 Kbps, or 125 Kbps
Communications media Special 5-wire cables (2 signal lines, 2 power lines, 1 shield line)
Special 4-wire flat cables (2 signal lines, 2 power lines)
Communications distances for
special 5-wire cables 		Baud rate Network length Branch line length Total branch line length
500 kbps 100 m max. 6 m max. 39 m max.
250 kbps 250 m max. *2 6 m max. 78 m max.
125 kbps 500 m max. *2 6 m max. 156 m max.
Communications distances for
special 4-wire flat cables 		Baud rate Network length Branch line length Total branch line length
500 kbps 75 m max. 6 m max. 35 m max.
250 kbps 150 m max. 6 m max. 48 m max.
125 kbps 265 m max. 6 m max. 135 m max.
Communications power supply 24 V DC supplied externally
Max. number of nodes 64 nodes (including Masters, Slaves, and Configurator)

*1. Terminators are required at both ends of trunk line.
*2. Indicates the maximum network length when thick cables are used. Reduce the network length to 100 m max. when
       using thin cables.

Network Specifications

CS1W-DRM21-V1 Specifications 3

Specifications

Communications power supply voltage 11 to 25 VDC *1
Current consumption Communications: 30 mA max.
Internal circuit: 290 mA max.
Max. number
of connectable
slaves 		Remote I/O, explicit message service 63 *2
Max. number
of I/O points 		Fixed allocations When used as a master 2,048 points
When used as a slave 32 points
User-set
allocations 		Using
allocated DM
Area words 		When used as a master 16,000 points
When used as a slave 3,200 points
Using
Configurator 		When used as a master 32,000 points
When used as a slave 4,800 points
Number of
allocated
words 		Fixed allocations When used as a master 64 input and 64 output words
Software switch/status area: 25 words
When used as a slave 1 input word, 1 output word *3
User-set
allocations 		Using
allocated DM
Area words 		When used as a master 500 input and 500 output words
Software switch/status area: 25 words
When used as a slave 100 input and 100 output words *3
Software switch/status area: 25 words
Using
Configurator 		When used as a master 500 input words x 2 blocks,
500 output words x 2 blocks
Software switch/Status area: 25 words
When used as a slave 100 input words x 1 blocks,
100 output words x 2 blocks
Software switch/Status area: 25 words
Max. message length 542 bytes *4
Max. number
of Units
mountable
to PLC 		Fixed allocations 3
User-set allocations 16
Weight 172 g max.

*1. Refer to the DeviceNet Operation Manual (W267) for the communications power supply specifications.
*2. The Device Unit uses a node, and so connection is possible to 63 slaves only.
*3. When the DeviceNet is used as a slave, "input" and "output" respectively refer to input from the slave to the master
       and output from the master to the slave.
*4. The maximum message length includes the command code when using the CMND instruction

last update: August 21, 2013

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