Omron K3HB, Техническое руководство пользователя

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3-5
Specifications
Section 1-2
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1-2 Specifications
1-2-1 DeviceNet Communications Specifications
Note (1) The IN Area can be divided into two blocks only when a CS/CJ-series De-
viceNet Unit is used as the master. (The connection type can also be se-
lected.) If a CVM1, CV, or C200HX/HG/HE DeviceNet Master Unit is used
as the master, the IN Area must be in 1 block with a maximum 100 words
(200 bytes). (Polling connection only.)
(2) If a CVM1, CV, or C200HX/HG/HE DeviceNet Master Unit used, only up
to 32 words can be allocated per node.
Item Specifications
Communications protocol Conforms to DeviceNet
Communica-
tions functions Remote I/O
communications • Master-slave connections (polling, bit-strobe, COS, or cyclic)
• Conform to DeviceNet specifications.
I/O allocations • Can allocate any I/O data from the Configurator.
• Can allocate any data, such parameters specific to the DeviceNet and the Digital
Indicator variable area.
• Up to 2 blocks for the IN Area, up to a total of 60 words (See note 1.)
• One block for the OUT Area, up to 29 words (The first word is always allocated to
Output Enable Bits.) (See note 2.)
Message com-
munications • Explicit message communications
• CompoWay/F communications commands can be sent (commands are sent in
explicit message format).
Connection format Combination of multidrop and T-branch connections (for trunk and drop lines)
Baud rate DeviceNet: 500, 250, or 125 kbps, or automatic detection of master baud rate
Communications media Special 5-wire cable (2 signal lines, 2 power lines, and 1 shield line)
Communications distance Baud rate Network length Drop line length Total drop line length
500 kbps 100 m max. (100 m max.) 6 m max. 39 m max.
250 kbps 100 m max. (250 m max.) 6 m max. 78 m max.
125 kbps 100 m max. (500 m max.) 6 m max. 156 m max.
The values in parentheses apply when Thick Cables are used.
Communications power supply 11 to 25 VDC
Maximum number of nodes that
can be connected 64 (includes Configurator when used)
Maximum number of slaves that
can be connected 63
Error control CRC error detection
Power supply Power supplied from DeviceNet communications connector