Omron R88A-MCW151-DRT-E - Comparison between Firmware Versions; Devicenet Specifications (MCW151-DRT-E Only)

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Comparison between Firmware Versions Section 1-6
Note The service life for the flash memory is 100,000 writing operations.
1-5-3 DeviceNet Specifications (MCW151-DRT-E only)
The MC Unit provides the following DeviceNet specifications.
Note Terminating resistors are required at both ends of trunk line.
Refer to the DeviceNet Operation Manual (W267) for other communication
specifications, such as communication cycle times.
1-6 Comparison between Firmware Versions
The following table shows a comparison between the two current versions of
the R88A-MCW151-E and R88A-MCW151-DRT-E Motion Control Units. The
changes are only related to firmware (not hardware) and the firmware is com-
mon for both types. Verify the current version of the MC Unit using the VER-
SION parameter.
Task program manage-
ment
Programming language BASIC
Number of tasks Up to 3 tasks running simultaneously plus the Com-
mand Line task
Max. number of programs 14
Data storage capacity 251 (VR) + 8000 (Table) max.
Saving program data MC Unit Random Access Memory (RAM) and Flash memory
backup. (See note)
Personal Computer Motion Perfect software manages a backup on the
hard disk of the personal computer.
Self diagnostic functions Detection of memory corruption via checksum
Detection of error counter overrun
Item Contents
Item Contents
Communications protocol DeviceNet
Supported connections (communications) Master-Slave: Remote I/O and explicit messages
Both conform to DeviceNet specifications
Connection forms (see note) Combination of multi-drop and T-branch connections
(for trunk or drop lines)
Baud rate 500 kbps, 250 kbps, 125 kbps (switchable)
Communications media Special 5-wire cables (2 signal lines, 2 power lines, 1
shield line)
Communications dis-
tances
500 kbps Network length: 100 m max. (100 m max.)
Drop line length: 6 m max.
Total drop line length: 39 m max.
250 kbps Network length: 250 m max. (100 m max.)
Drop line length: 6 m max.
Total drop line length: 78 m max.
125 kbps Network length: 500 m max. (100 m max.)
Drop line length: 6 m max.
Total drop line length: 156 m max.
Parentheses indicate the length when Thin Cables are used.
Communications power supply 11 to 25 VDC (Supplied from the communications con-
nector)