You are here:Home » News » FAQ » 1: How to set the address if several expansion modules are linked together?
1: How to set the address if several expansion modules are linked together?
Views: 396 Author: Site Editor Publish Time: 2015-08-10 Origin: Site
How to set the address if several expansion modules are linked together? A.There are 2 kinds of expansion modules, one is PR-E series, it is for PR-18,PR-24 series CPU, the other is EXM-E series expansion, it is for EXM series CPU and ELC-12-N ethernet CPU. But all the default address of both series expansion modules is 1.
Set address of extensions through dial switch.
Notes: 1.Up to 16 pcs expansion modules(PR-E series) can be linked together and 8 pcs expansion module(EXM-E series) can be connected with EXM CPU.
2. If more than one expansion module connect to CPU at the same time ,the address of expansion module must be different each other, otherwise the system(CPU+expansions) would run abnormal.
Step 1: Using a screwdriver , take the plastic slice down and we’ll find a dial switch.
2: Dial the switch as the below instructions to set the address what you need.
Up to 8 extensions (includes IO ,AQ,AI,PT100 modules) can be connect with the CPU .
Address table as below:
means the switch position The expansion port of CPU must be open when the using extensions for EXM series CPU(The default status of the expansion is close, because it can be applied to RS485 module if RS485 communication module is connected). Following is tell you how to open the expansion port:
You shall first select the FUNCTION PAGE. 1. Press or key to move the cursor to “Set address”: 2. Press OK key to confirm “Set adr”: 3. Press or key to move the cursor to “Set E adr:. 4. Press OK key to confirm “Set E adr”: 5. Press or key to select “on” You also can open the expansion port for EXM or ELC-12-N cpu with eSmsConfig, after the communication is established between EXM and eSmsconfig, you can click the menu Tools->Set Extended module, then tick up Extended module option, the eSmsconfig will show “set ok”, then recycle the power supply of EXM cpu. Notes: 1. The address setup of the extension module must be before powering on. Modification after powering off will be ineffective. 2. Freely connection , need not care the power type between CPU and extensions ,that means the AC type module also can be connected with the DC type module. 3.Power on the CPU and the extensions on the same time ,in the other words the power on time of extension module do not later than the CPU’s ,otherwise ,the communication between CPU and extension may not be established. 4. If the communication is establised between CPU and extensions , the indicator on the top of the extensions’ house will turn to RUN(green colour). 5. If more than one expansion module connect to CPU at the same time ,the address of expansion module must be different each other, otherwise the system(CPU+expasnions) would run abnormal.
means the switch position 
or 
key to move the cursor to “Set address”: 
key to select “on” 
