Manual XBC-U

System
Chapter 2 System Configuration
2.3.2 Instructions for System Configuration
(1) high speed expansion I/F module
XGB ‘U’ Type PLC supports the high speed expansion I/F to enhance the expansion module processing speed.
This section describes the instructions to configure the system by using the high speed expansion I/F modules
and the existing expansion modules.
- The existing XGB expansion· communication· special modules can be commonly used and the high speed
expansion I/F module that cannot be supported by the XGB basic unit are available.
- In the case of expansion communication modules, a total of 4 expansion communication modules can be
mounted in the order of installation; 2EA of high speed I/F communication modules, 2EA of the existing
communication I/F modules.
- In the case of the high speed expansion module, it acts as the high speed expansion I/ only when it is installed
in 1-stage or 2-stage.
- When more than two high speed expansion modules are installed, only the modules mounted in 1-stage, 2-
stage act as the high speed I/F; for the modules mounted in 3-stage or more, they works equally to the
existing expansion modules or does not work depending on the corresponding modules.
- The high speed expansion I/F modules cannot be installed behind the normal expansion modules. Accordingly,
when using the high speed expansion modules and the existing normal expansion modules by mixture, the
existing ones should be installed behind the high speed ones.
- The below table represents the example of the system configuration using the high speed expansion modules
and the existing normal expansion modules.
Basic Unit
XGB ‘U’ Type
Existing XGB
1-
stag
e
Expansion modules
2-
stage
3-
stage
(◎ : High speed expansion communication modules, ○: Existing communication modules,
◈ : High speed expansion special, I/O modules, ◇ : Existing special, I/O modules)
4-
stage
5-
stage
Definitions of Operations
Remarks
◎ ◎ ◈ ○ ◇
1,2-stage : Using the high speed I/F, 3~5-stage : 3 communication
Using the existing I/F
modules works
◎ ◎ ○ ○ ◇
1,2-stage : Using the high speed I/F, 3~5-stage : 4 communication
Using the existing I/F
modules works
◈ ○ ○ ◇ ◇
1-stage : Using the high speed I/F, 2~5-stage : 2 communication
Using the existing I/F
modules works
◇
◈
◎
◎
◈
◇
◇
◈
◇
◇
System Configuration is impossible.
(The high speed expansion modules cannot be
applied to the further stage of the existing
expansion modules)
◎ ◎ ◎ ◇ ◇
1,2 -stage : Using the high speed I/F, 3~5-stage : 3 communication
Using the existing I/F
modules works
◇ ◇ ◇ ◇ ◇
Using 10-stage of the existing expansion
modules
2 communication
◎ ◎ ◇ ◇ ◇
modules works
1~5-stage: Operated by the existing I/F
2 communication
◎ ◎ ◈ ◇ ◇
modules works
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