PCC-IV Instruction Manual (Rev. 0.1)
Page 6-34
Section 6
– Blockware Functions
Technical Reference
F90 [D0] Discrete 0 Constant
Function
D0
provides a constant Output of a discrete 0 (i.e.
logic “Low”).
Discrete 0 is the default Input for all discrete Inputs for all functions.
No Inputs or parameters are required for
D0
.
---------------------------------------------------------------------------------------------
NAME: D0 SINGLE USE FUNCTION: N OUTPUT TYPE: D
---------------------------------------------------------------------------------------------
No Inputs and No Parameters
F91
[D1] Discrete 1 Constant
Function
D1
provides a constant Output of a discrete 1 (i.e.
logic “High”).
Discrete 1 is useful as a dummy Input to many other functions:
PANEL, LOGIC
,
…. No Inputs or parameters are
required for
D1
.
---------------------------------------------------------------------------------------------
NAME: D1 SINGLE USE FUNCTION: N OUTPUT TYPE: D
---------------------------------------------------------------------------------------------
No Inputs and No Parameters
F92
[DIN] Discrete Input
Function
DIN
is the Blockware interface to the PCC-IV
’s 120 Vac optically isolated Discrete Inputs hardware. The
DIN
function interfaces to Discrete Inputs on the CPU board, and on option boards. Parameter 1 specifies the board
location, the CPU board = board 0. Parameter 2 selects a specific Discrete Input on the specified board.
When 120 Vac is applied to the selected Input, the Block Output equals discrete "1". Optionally, Parameter 3 (Invert
Output) can be used to invert the Output (i.e., 120 Vac Input equals discrete "0" Output)
---------------------------------------------------------------------------------------------
NAME: DIN SINGLE USE FUNCTION: N OUTPUT TYPE: D
---------------------------------------------------------------------------------------------
No Inputs
Parameter Description Default Max Min Code Notes
_____________________________________________________________________________________________
1 OPTION BOARD (0=CPU BOARD) 0 2 0 3
2 INPUT CHANNEL 1 5 1 3 1
3 INVERT OUTPUT? 0=NO 1=YES 0 1 0 2
Notes:
1. Maximum quantity depends on type of option board that is currently installed
