Devicenet Communications - Omron K3HB Datasheet

DeviceNet Communications

Communications protocol
Supported Remote I/O
communications communications
I/O allocations
Message
communications
Connection methods
Baud rate
Communications media
Communications distance
Communications power supply
Allowable voltage fluctuation range
Current consumption
Maximum number of nodes
Maximum number of slaves
Error control checks
DeviceNet power supply
Conforms to DeviceNet
Master-Slave connection (polling, bit-strobe, COS, cyclic)
Conforms to DeviceNet communications standards.
Allocate any I/O data using the Configurator.
Allocate any data, such as DeviceNet-specific parameters and variable area for Digital Indicators.
Input area: 2 blocks, 60 words max.
Output area: 1 block, 29 words max.
(The first word in the area is always allocated for the Output Execution Enabled Flags.)
Explicit message communications
CompoWay/F communications commands can be executed
(using explicit message communications)
Combination of multi-drop and T-branch connections (for trunk and drop lines)
DeviceNet: 500, 250, or 125 Kbps (automatic follow-up)
Special 5-wire cable (2 signal lines, 2 power supply lines, 1 shield line)
Baud rate Network length
500 Kbps 100 m max.
(100 m max.)
250 Kbps 100 m max.
(250 m max.)
125 Kbps 100 m max.
(500 m max.)
The values in parentheses are for Thick Cable.
24-VDC DeviceNet power supply
11 to 25-VDC DeviceNet power supply
50 mA max. (24 VDC)
64 (DeviceNet Configurator is counted as one node when connected.)
63
CRC errors
Supplied from DeviceNet communications connector
Drop line length
(max.) (max.)
6 m max.
6 m max.
6 m max.
K3HB-R/-P/-C
Digital Indicators
Total drop line length
(max.)
39 m max.
78 m max.
156 m max.
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