User manual

IEC61131 User and Reference Manual
April 22, 2008
2
modems, HART Interface modules, Store and Forward messaging, PID controllers and
Modbus master and slave protocols. Custom functions are integrated into the ISaGRAF
Workbench application programming environment.
Custom I/O Connections
All 5000 Series I/O modules and SCADAPack I/O modules are fully supported by the
enhanced ISaGRAF Workbench. The ISaGRAF Workbench I/O connection dialog is used to
add selected modules to the I/O connection list. Any combination of I/O modules may be
selected up to the maximum number of I/O points supported by the SCADAPack controller.
Each input or output point on a module is referenced with a variable name and, if required, a
Modbus register address. Variables are updated continuously with data from 5000 Series I/O
modules and SCADAPack I/O modules.
Custom Controller Commands
Custom controller commands are specific to the operation of SCADAPack controllers.
Operating parameters are configured using selected controller commands. Parameters such
as controller serial port settings, controller initialization, I/O module error indication and
controller locking functions are configured using controller commands. Control of the
connection and disconnection of dialup modem communication links and reading and writing
parameters to the controller are also executed using controller commands.
Organization of the Manual
The remainder of the manual is organized as follows. New users should read the sections in
order, to gain an understanding of underlying concepts before tackling detailed material.
The Project Development Overview section describes how to create, load and run an
application containing custom functions, function blocks and I/O modules and equipment.
The PC to Controller Link section describes the configuration of the communication link
between the PC running ISaGRAF and the target controller.
The Controller Menu Commands section describes the commands and options available
for the SCADAPack controllers.
The Modbus Addressing section describes methods for assigning Modbus addresses to
declared variables.
The I/O Connection Reference section describes the I/O modules and equipment available
with the SCADAPack controllers.
The