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The warning and faults are normally set up using the user interface; Advanced Setup, Digital I/O,

Warings/Faults.

Warning bits (CIT word 18) and Fault bits (CIT word 19) go on whenever the corresponding

logical inputs or outputs go on and stay on until they are deliberately cleared. Faults and Warnings

can be cleared using the user interface or TMCI page K. Warnings can also be cleared using CIT

word 44, bit 8. See CIT documentation. TCMI page K looks like this

Warnings: 0x00000002 – The hex value of Warnings, CIT word 18.

Faults: 0x00000000 – The hex value of Faults, CIT word 19.

There are five columns for each Fault and Warning:

Col 1: Internal number of the logical input or output

Col 2: State of the logical input or output

Col 3: State of the corresponding bit in Warnings or Faults in the CIT

Col 4: Not used in this mapping

Col 5: Name of the logical input or output.

It is important to note that the bits in the Warnings and Faults words reflect the state of “1” in the

third column, not the second. In this example, both are on for the logical input Belt Drv Ovld. Bit 1

of the Warnings word is on. If the Belt Drv Ovld input is turned off, then the “1” in the second

column goes away, but stays in the third until the warning is cleared, either from the user interface

or by the "Clear Warnings Command" bit [8] in the Control [44] register.

Note that the bit order in the CIT words for Warnings and Faults are not configurable. It is derived

from the order of logical outputs and logical inputs in the Digital Outputs and Digital Inputs

screens. If you add or remove a warning or fault qualifier to a logical output or input, the bit

position changes.

Configuring Network Inputs and Outputs

Logical inputs and outputs can be mapped in three ways:

1. To a physical input or output. In this example the logical input Belt Drv Ovld is mapped to

GCM Input 2, which, in turn, is connected to the Overload output of the belt motor VFD. The

physical output GCM Output 1 is mapped to the logical output Fdr Drv Enable. The output is

then connected to the Start input of the belt motor VFD.

2. To a network input or output. In this example, the logical input Run Permission is mapped to

Network Input 1. This allows the PLC to control (start and stop) the feeder through the

External Inputs word 45, bit 0.

3. Unused Logical Inputs are typically connected to the Physical Input Always On or Always Off.

The PLC controls network inputs to the GCM in word 45 in the CIT. They appear in the GCM as

Netw Input 1.. Netw Input 16. You then map them to Logical Inputs in the GCM. Note that the

BLT>

PK Belt_1_7_2 Faults and Warnings

Warnings: 0x00000002, W to clear. Faults 0x00000000, F to clear

012 0 0 0 High Belt Load |006 0 0 0 LoadCell 1 Ovl

158 1 1 0 Belt Drv Ovld |007 0 0 0 LoadCell 1 Undl

|050 0 0 0 Belt Drive Fail

1 2 3 4 5 6 7 8 9 10 11

Transmit 7

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