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8
Overview of DeviceNet Section 1-1
Message Communications
Communications Instructions
Note FINS message communications are supported between any two PCs with a
CS/CJ-series DeviceNet Unit (CS1W-DRM21/CJ1W-DRM21). They are not
supported for PCs with a C200H DeviceNet Master Unit (C200HW-DRM21-
Master Master
RS-232C
Interface Unit
Master Unit model Send Receive FINS
commands
CS Series CS1W-DRM21 SEND(192) RECV(193) CMND(194)
CJ Series CJ1W-DRM21
CVM1, CV Series CVM1-DRM21-V1 SEND(192) RECV(193) CMND(194)
CS Series,
C200HX/HG/HE
C200HW-DRM21-V1 None None IOWR
C200HS ---
Item Master model Model Capacity
Max. No. of nodes per
Master for message
communications using
FINS commands
CS Series CS1W-DRM21 62 nodes
(Node address 0 cannot be
used in FINS communications.)
CJ Series CJ1W-DRM21
CVM1, CV Series CVM1-DRM21-V1 8 nodes
CS Series,
C200HX/HG/HE
C200HW-DRM21-V1 8 nodes
C200HS Not supported
Max. No. of nodes per
Master for message
communications using
explicit messages
CS Series CS1W-DRM21 63 nodes
CJ Series CJ1W-DRM21
CVM1, CV Series CVM1-DRM21-V1 63 nodes
CS Series, C200HX/
HG/HE
C200HW-DRM21-V1 63 nodes
C200HS Not supported
Max. message length CS Series CS1W-DRM21 SEND(192): 267 words
RECV(193): 269 words
CMND(194): 542 bytes (start-
ing with command code)
CJ Series CJ1W-DRM21
CVM1, CV Series CVM1-DRM21-V1 SEND(192): 76 words
RECV(193): 78 words
CMND(194): 160 bytes
(starting with command code)
CS Series,
C200HX/HG/HE
C200HW-DRM21-V1 IOWR(223): 160 bytes (start-
ing with command code)