PCC-IV Instruction Manual (Rev. 0.1)
Page 6-49
Section 6
– Blockware Functions
Technical Reference
F123 [COMM] MODBUS Communications Link Control
Function
COMM
provides Communications Link (Comm Link) status and controls the ability of Modbus to write
(modify) PCC-IV Block Outputs and parameters. The Block is not required if the Comm Link does not have to write
(modify) to any Block Outputs or parameters (i.e., the Comm Link will be read-only).
The Block Output is "1" if MODBUS communication is enabled.
Remote/Local (R/L) Input: When the R/L Input is "1" (Remote), the Comm Link can write (modify) FPT/H (F38),
FPCON (F55), PB (F98), RAIN (F5), and RDIN (F97) Block Outputs.
When the R/L Input is "0" (Local), the Comm Link cannot modify FPT/H, FPCON, or PB Blocks. However, Comm
Link can write to RAIN and RDIN Blocks in Local mode.
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NAME: COMM SINGLE USE FUNCTION: Y OUTPUT TYPE: D
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Input Type Description Notes
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1 D REMOTE\LOCAL BLOCK (1=REMOTE WRITES ENABLED, 0=LOCAL ONLY)
No Parameters
F125 [ROUT] Relay Output
Function
ROUT
is the Blockware interface to the PCC-IV Relay Output hardware.
ROUT
interfaces to Relay Outputs
on the CPU board and on option boards. Parameter 1 specifies the board location (the CPU board = board 0).
Parameter 2 selects a specific Relay on the specified board.
Invert Input: By default, a "1" Input energizes the Relay and changes the Output to a "1". If Parameter 3 is changed
to a "1
”, a "0" Input Energizes the Relay and the Block Output.
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NAME: ROUT SINGLE USE FUNCTION: N OUTPUT TYPE: D
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Input Type Description Notes
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1 D INPUT BLOCK 1
Parameter Description Default Max Min Code Notes
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1 OPTION BOARD (0=CPU BOARD) 0 2 0 3
2 OUTPUT CHANNEL 1 2 1 3
3 INVERT INPUT? 0=NO 1=YES 0 1 0 2 1
Notes:
1. See "Invert Input" above. By default, Relay energizes when Input = "1"
