Installation manual

Publication 1747-RM001G-EN-P - November 2008
SLC 5/03 (OS30x), SLC 5/04 (OS40x) and SLC 5/05 (OS50x) Firmware History A-13
OS302, Series C, FRN 6
OS401, Series C, FRN 6
OS501, Series C, FRN 6
released: November 2002
Enhancements
• Response support for additional PLC-5 style commands
SLC 5/03, 5/04 and 5/05 processors now can receive and respond to
the following additional PLC-5 style commands received through
channel 0 or channel 1.
The Bit Write and Read-Modify-Write commands are used to write one
or more bits within a particular word of data in any data table integer or
binary file, as well as bits within status file words.
The Word Range Read command allows a block of words (up to the
maximum supported by the receiving channel) to be read from any data
table file.
The Word Range Write command allows a block of words to be written
(up to the maximum supported by the receiving channel) to any data
table file (subject to configured file write protection, if any), except for
the I/O image files.
For all four commands, the PLC-5 system address may be encoded as
either a logical binary address or a logical ASCII address.
• Channel diagnostic counter reset command
When a diagnostic counter reset command is sent to the processor
(RSWho, RSLogix 500 or another application), the diagnostic counters
for both channel 0 and channel 1 are reset. Previously, only the counters
on the channel where the command was received was reset.
• DF1/DH-485 broadcast support
Broadcast write commands received through channel 0 can be executed
with the previously unsupported channel 0 system mode drivers (DF1
Full-duplex and DF1 Radio Modem).
Broadcast write commands can be initiated via the MSG instruction for
all channel 0 system mode drivers and for channel 1 (DH-485) on the
SLC 5/03 processor.
Previously, SLC 5/03, 5/04 and 5/05 processors supported the
reception of broadcast write commands via DF1 Half-duplex and
DH-485 networks. Broadcast write commands are commands sent to
node 255. When a broadcast write command is received without error,
the receiver attempts to execute the command, but never returns a reply
to the write command. This allows a single command to synchronize all
of the devices receiving that command on the local network. This can be
used to simultaneously set all of the device clocks on the network or to