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Parameter

Comment

C: LnPar

UART Line parameter settings, hexadecimal. Bit encoded:

Bit 0, 1 Word Length – 00: 5 bits, 01: 6 bits, 10: 7 bits, 11: 8 bits.

Bit 2 Stop bits. 0: 1 stop bit, 1: 2 stop bits

Bit 3 Parity Enable

Bit 4, 5 Parity Select – 00: Odd, 01: Even, 10: Forced 1, 11: Forced 0

Bit 6 Enable Break transmission. Always 0!

Bit 7 DLAB Access. Always 0!

Typical settings are 0x03 for N, 8, 1 (most commonly used) and 0x1B for E,8,1

(Modbus RTU default)

E1:WProt

Write Protection bits, hexadecimal. Normally 0xBFF, meaning all tags except the

Primary Setpoint are write protected. See CIT documentation.

E2:Worder

Word Order bits, Hexadecimal. Normally 0x0000, meaning all tags have normal

word order. This has to be found by trial and error. The Siemens S7 PLC, for

example, has the word order for a floating point value reversed (as compared with

a Modicon PLC), so you must enter 0x0FFF. See CIT documentation.

E3:IntFra

Integer/Fraction bits, hexadecimal. Normally 0x0000, meaning all tags are

transferred as Floating Point numbers. See CIT documentation.

Fn:Tag n,

n=1..5

Tagged register number. Up to five internal GCM Register Numbers you want to

monitor or set. The corresponding register value will appear in the "Tag 1 Rd V"

position in the CIT. Register numbers are available in the GCM Firmware

Overview.

G1: Unit

Addr

Modbus “Node Number” Must be different for all slaves on the multidrop serial

line.

G2: Map

Size

There are two different CIT layouts. This document covers CIT type 1 only. Always

set to 1!

G3: Max

Time

Max allowed time between incoming, valid Modbus telegrams addressing the Unit

Address of this GCM. If this time is exhausted, the logical output Port 1 Timeout

or Port 2 Timeout goes on, depending on which port is used for Modbus

communications.

If you extend the size of the write table beyond word 59, you will overwrite “Write Protect”, “Word

Order”, “Int/Frac FP” and "Tag Reg 1-5" parameters from the PLC. This allows for multiplexing of

the parameters in the "Tag n Rd V" positions.

Configuring warnings and faults

Warnings and Faults are qualifiers to logical inputs and outputs, normally set by the user. See

“Digital I/O mapping” in the Operations and Maintenance manual. Warnings are considered to

require attention. Faults are considered to be fatal for the feeder operation, and the controller will

attempt to stop the feeder. In this example the warnings and faults are set up according to the

following table:

I/O point

Qualifier

Comment

LoadCell 1 Ovl

Fault

Invalid Load Cell Signal

LoadCell 1 Undl

Fault

Invalid Load Cell Signal

Blt Drive Fail

Fault

Time delayed indication that the belt drive has failed or is not

ready.

High Belt Load

Warning

Too much material on the belt

Belt Drv Ovld

Warning

Signal from the belt motor drive, connected to an MC³

1 2 3 4 5 6 7 8 9 10 11

Transmit 7

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