Chapter 1. Introduction
GFK-2892F
March 2019
15
1.10
Operational Differences vs. Genius Bus Controller
Persons migrating from a Genius environment where the Genius Bus Controller performs functions similar to
those of the GCG001 will want to be aware of the following differences:
1.
COMMREQ function block SYSID and Task parameters change. SYSID is now the rack & slot of the
PNC connected to the GCG001. Task is now 132.
2.
COMMREQ data blocks are different, mainly due to added PROFINET Device Number and
expansion of memory address fields from one word to two words. See COMMREQ summary in
Section 6.3.3.
3.
Pulse Test and Assign Monitor COMMREQs do not support Genius bus address of 255 to send
messages to all blocks.
4.
COMMREQ commands: GCG001 does not support all datagrams. See section 6.3.2 for a
corresponding list of supported COMMREQs.
5.
GCG001 supports hot-standby, duplex, and dual-bus redundancy modes
1
. Dual-bus requires
additional application code.
6.
GCG001 can be assigned to bus addresses 30 and 31 only.
7.
GCG001 does not support GENI, GENA, or PCIM.
8.
Prior to V1.1.1, fault contact operation has changed. Whenever there is a fault on a single channel
of a Genius block, all fault contacts associated with that Genius block will become active. All faults
on that device must be cleared before any of the fault contacts will de-energize. Beginning with
V1.1.1, when there is a fault on a single channel, none of the fault contacts will become active.
9.
Genius faults routed through a GCG001 appear as PROFINET faults to the CPU. The same fault
routed through a Genius Bus Controller will present a different error code.
10.
Circuit Fault Behavior:
•
Prior to GCG firmware release V1.1.1, when a Genius block encounters a circuit fault on
one or more points or channels, the GCG001 causes all of the input references associated
with that block to either hold last state or go to default values until such time as the fault
is cleared. See the Alarms discussion in section 4.1.4 for a work-around to this behavior.
•
Beginning with V1.1.1, when a Genius block encounters a circuit fault on one or more
points or channels, the GCG will cause only the faulted input references to hold the last
state or go to default values. The other points or channels on the block will continue to
operate normally.
11.
Beginning with V2.2.2,
Addition of Module
and
Loss of Module
faults will not be logged when
Genius devices change their online status with the Genius bus. The user must monitor the 32 bits
of
to determine if Genius devices are operational or not.
12.
Beginning with V2.2.4.1 Fault Status Bits are available to monitor each device on the bus. Refer to
Section 5.1.3 for additional information.
1
For Dual Bus Redundancy, GCG001 firmware version 2.2.0 or later is required; for all other redundancy modes, version
1.1.0 (minimum) is required.
