22
Comparison between Firmware Versions Section 1-6
!Caution
The R88A-MCW151-E FW 1.62 is fully backward compatible with the previ-
ous version FW 1.61. For the R88A-MCW151-DRT-E FW 1.62 many
DeviceNet implementation changes have been done. For both Units caution
must be taken when upgrading.
Item FW 1.61 FW 1.62
Commands and
instructions
ADD_DAC No. Yes.
Command to enable dual feed-
back control.
DeviceNet
(MCW151-DRT-E
only)
Software reset of
MC Unit
Possible by either bit in
Remote I/O Output word 1 or
Explicit Message command
RESET.
Possibly only by Explicit Mes-
sage command RESET.
Explicit messages
(read and write)
Different maximum transfer
amount for read and write.
Maximum amount of elements
to transfer (read/write) is 39
(three-word format) and 119
(one-word format).
See 4-2-2 Explicit DeviceNet
Messages.
Device objects - Update of Device objects.
See Appendix B Device Proto-
col (MCW151-DRT-E only).
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