Table of Contents
Advertisement
CHAPTER7 COMMUNICATIONS WITH INTELLIGENT
FUNCTION MODULE
(1) Intelligent function module
The intelligent function module allows the CPU module to process analog quantity and high speed pulses that
cannot be processed by the I/O modules.
For example, the analog-digital conversion module, one of the intelligent function modules, uses analog quantity
by converting it into a digital value.
(2) Communication with intelligent function module
The intelligent function module is equipped with a memory (buffer memory) to store the data taken in from or
output to external devices.
The CPU modules writes or reads data to or from the buffer memory of the intelligent function module.
7.1 Communications between CPU Module and Intelligent Function
Module
The following table shows the communication methods between the CPU module and intelligent function modules and
the communication timing.
Communication methods with intelligent function module and the communication timing
Table7.1
Communication methods with intelligent function
module
Initial setting
GX Configurator
Auto refresh setting
Initial device value
*1
FROM or TO instruction
Intelligent function module device
Intelligent function module dedicated instruction
*1: Indicates the program that uses the intelligent function module device, FROM or TO instruction, or the intelligent function module
dedicated instruction.
*2: The RUN/STOP/RESET switch is set from STOP
●
Data, such as initial settings used for communications with intelligent function module, are stored in the CPU module.
For the storage location, refer to Section 5.1.
●
Power off and then on or reset the CPU module to make the initial setting configured in GX Configurator taken effect.
CHAPTER7 COMMUNICATIONS WITH INTELLIGENT FUNCTION MODULE
Power off
on
-
-
*1
-
*1
-
RUN (RUN LED flashes)
Communication timing
CPU
STOP
Instruction
module is
*2
execution
RUN
reset
-
-
-
-
-
-
-
-
STOP
RUN.
Reference
END
processing
-
-
Section 7.1.1
-
-
-
Section 7.1.2
-
Section 7.1.3
-
Section 7.1.4
-
Section 7.1.5
: Executed, -: Not executed
7 - 1
1
2
3
4
5
6
7
8
Advertisement
Table of Contents
