Watlow LogicPro - Manual (Page 224)

Chapter 12: Function Blocks LogicPro User’s Guide
208 Watlow Anafaze Doc.# 28002-00 Rev 3.00
CPC400 IO Drivers
IO Driver Choice
The IO Driver allows the logic program to examine or set an I/O
value or other value stored in the database. Choose the appropriate
driver for the value which you want to access. Table 12.10 describes
what data can be accessed with each IO Driver.
Table 12.10 Data Accessed by the IO Drivers
IO Physical Addresses
The IO Physical Address syntax depends on the IO Driver. The
CPC400 Series User’s Guide lists the addresses for each I/O point
and parameter. In general there are three types of I/O drivers. Table
12.11 lists the IO Drivers in the categories that characterize the IO
Physical Addresses used with them.
Table 12.11 Categories of IO Drivers
IO Driver Data Accessed
CPC400_PV
Process variable (scaled analog input) value for
any channel.
CPC400_Digital_In State of any digital input.
CPC400_Digital_Out State of any digital output.
Setpoint Setpoint value of any of the channels.
Soft_Bool
The value of any soft bool register. Typically
used to exchange information between a logic
program and an HMI program or operator inter-
face panel.
Soft_Input
Value of any of the soft inputs. Typically used for
a logic program to output a value to the input of
a closed-loop control channel.
Soft_Int
The value of any soft int register. Typically used
to exchange information between a logic pro-
gram and an HMI program or operator interface
panel.
Database
The value of any closed-loop control parameter
that is not supported by another IO Driver.
Category Drivers
Hardware Specific
CPC400_PV
CPC400_Digital_Out
CPC400_Digital_In
Parameter Specific
Setpoint
Soft_Input
Soft_Bool
Soft_Int
Database Database