Mitsubishi MELESEC-ST User Manual page 26

1 OVERVIEW
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(2) Flexible system configuration
(a) The number of input/output points of each I/O module can be increased in
units of minimum two points. Therefore, the efficient system can be
configured according to the needs.
(b) A single head module accepts up to 63 slice modules (up to 26 intelligent
function modules*
network changes depending on the total input/output points of slice modules.
For details, refer to the Head Module User's Manual.
1: The number of mountable modules varies depending on the intelligent
function modules. For the number of mountable modules, refer to the
Intelligent Function Module User's Manuals.
(3) Easy maintenance
(a) Online module change
The I/O module or intelligent function module can be replaced. Also, the
modules are front-detachable for easy replacement.
(b) Special tools unnecessary
1) Wiring the terminal block
The screw clamp/spring clamp type terminal block can be wired with a
flat-blade screwdriver and needs no special tools.
2) Mounting and removing the modules
The base module can be mounted directly to a DIN rail without tools.
It can be removed from the DIN rail with a flat-blade screwdriver.
The slice module can be mounted to and removed from the base
module without tools.
(4) Various settings of I/O modules can be changed
The input module's response time and the output module's output status
(CLEAR, HOLD) can be changed.
For details, refer to the Head Module User's Manual.
(5) Failsafe function of output module
The transistor output module with short protection and thermal protection
functions is available.
(6) GX Configurator-ST available
Using the personal computer preinstalled with optional GX Configurator-ST and
connected to the head module, parameter setting, system monitor, forced output
test, online module change and other operations can be easily performed for the
MELSEC-ST system. For details, refer to the GX Configurator-ST Operation
Manual.
1
). The number of head modules mountable on a field
MELSEC-ST
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