no way to compare when less than two revisions

Differences

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

@@ Line 1: / Line 1: @@
+====== Modbus ======
+{{::modbus_logo.png?direct&250|}}
+In WebHMI, such syntax of addressing ModBus (RTU/ASCII/TCP) registers is defined:
+^Register address	^Description	^Data type^	Read(FC((FC - function code used)))/Write(FC)^
+|Cx	|Coils. X — output number (valid range is 0..65535). Examples: C1, C3, C44	|Bit| Read(0x01)/Write(0x05)|
+|DIx	|Discrete Inputs. X — input number (valid range 0 ..65535). Examples: DI1, DI3, DI44, DI45000	|Bit |Read(0x02)/—|
+|HRx	|Holding Registers. X — register address (valid range 0..65535). Examples: HR1, HR3, HR44, HR65043	|Bit, Byte, Word, Double Word	|Read(0x03)/Write(0x06)|
+|MHRx	|Identical to HRx. The difference is that the writing in such registers occurs using the Modbus function No. 16 (Preset Multiple Register).	|Bit, Byte, Word, Double Word	|Read(0x03)/Write(0x16)|
+|IRx	|Input Registers. X — register address (valid range 0..65535). Примеры: IR1, IR3, IR44, IR65043	|Bit, Byte, Word, Double Word	|Read(0x04)/—|
+  ATTENTION! By default, for double word reading, two queries each by one word will be used. To explicitly set
+  double-word  reading with one query (multiple read), you must enable grouping in the connection properties.