Differences

This shows you the differences between two versions of the page.

--- terra4d:moxa [2019/07/11 14:28]
wikiadmin
+++ terra4d:moxa [2022/07/28 10:10] (current)
editor [Other hints]
@@ Line 27: / Line 27: @@
     * create a IO device of type Modbus and select SubType "Output"
     * IP port: 502, Server address: 0, Start address: 0, Output number: 0...N
+  * Input register (e.g. for PWM counter):
+    * create a IO device of type Modbus and select SubType "Input register"
+    * IP port: 502, Server address: 0, Start address: 17, Input number: 0...N
+  * Analog Input:
+    * create a IO device of type Modbus and select SubType "Analog Input"
+    * IP port: 502, Server address: 0, Start address: 520, Input number: 0...N
+    * Configure low/high threshold depending on application to generate events when reading goes outside the expected range.
 ===== Other hints =====
-Login to the browser page of the Moxa device to see the status of inputs and outputs and also other information.
+  * Within the device web page, in the main menu, within User-Defined Modbus Addressing, select Analog Inputs, Digital Input/Outputs (or similar):
+     * Make sure "Enable Modbus/TCP Slave Protocol" is enabled
+     * Within the table all the addresses of the available data points are listed. E.g. "AI Scaling Value (Float)" at "0520" as Input Register (read-only), Reference Address "30521"
+     * Within Terra4D use "Analog Input" with the address 520 (the 30000 is automatically added by selecting Analog Input).
+ * [[https://store.chipkin.com/products/tools/cas-modbus-scanner|CAS Modbus Scanner]] Tool to read/check Modbus device and see the values returned by the device.

User Tools

Site Tools

Differences

Page Tools