Rockwell Automation 1747-SDN SLC 500 DeviceNet Scanner Module User Manual - Manual (Page 131)

Publication 1747-UM655B-EN-P - June 2007
1747-SDN Module Firmware History 131
Enhancements
This section describes the enhancements to the firmware.
Enhanced Explicit Message Pass-through Capability
With the 6.002 firmware revision, the size of the M0/M1 file could be
expanded to 395 words. This can accommodate a larger pass-through
message than previous firmware revisions. For example, this
enhanced capability now allows DeviceNet PanelView terminal
downloads.
M1 File Includes Device Active Table Section
With this revision, words 206…209 in the M1 file are now used for the
Device Active Table. The scanner assigns one bit in consecutive order
to consecutive device addresses starting at node 0 at M1.S.206/0. If a
bit is set, it indicates that the node is in the scanner’s scanlist and has
successfully communicated with the module. The bit is reset if the
scanner tries to communicate to the node but the node has gone
offline.
Immediate Input/Output
With this revision, the scanner will act upon immediate input and
output instructions (IIM, IOM) from the SLC 500 programmable
controller.
Corrected Anomalies
Anomaly Description
Reset I/O run bit in scanner copy of I/O during transition to
processor Program mode. This would prevent immediate change from Idle to Run mode before
the I/O scan of the processor when the processor transitions to Run
mode. This anomaly has been corrected.
Unwanted information from a previous connection remained when
the former connection timed out while waiting for a fragment ack. This prevented a new connection from being established since the
connection state was incorrect. This anomaly has been corrected.
Check for error after setting EPR on slave connection. If a device state conflict error is returned by a slave when the EPR
bit is set, the scanner would not report the error. This anomaly has
been corrected.