3: INSTALLATION AND WIRING3-2 « FC4A MICRO SMART USER ’S MANUAL »Assembling ModulesThe following example demonstrates the procedure for assembling the all-in-one 24-I/O type CPU module and an I/Omodule together. When assembling slim type CPU modules, take the same procedure.1. When assembling an input or output module,remove the expansion connector seal from the24-I/O type CPU module.2. Place the CPU module and I/O module side by side. Put theexpansion connectors together for easy alignment.3. With the expansion connectors aligned correctly and theblue unlatch button in the down position, press the CPUmodule and I/O module together until the latches click toattach the modules together firmly. If the unlatch button isin the up position, push down the button to engage thelatches.Disassembling Modules1. If the modules are mounted on a DIN rail, first remove themodules from the DIN rail as described on page 3-7.2. Push up the blue unlatch button to disengage the latches,and pull the modules apart as shown. When disassemblingslim type CPU modules, take the same procedure.Caution • Assemble MicroSmart modules together before mounting the modules onto a DIN rail. Attemptto assemble modules on a DIN rail may cause damage to the modules.• Turn off the power to the MicroSmart before assembling the modules. Failure to turn power offmay cause electrical shocks.Unlatch ButtonCaution • Remove the MicroSmart modules from the DIN rail before disassembling the modules. Attemptto disassemble modules on a DIN rail may cause damage to the modules.• Turn off the power to the MicroSmart before disassembling the modules. Failure to turn poweroff may cause electrical shocks.Unlatch Button
