Blocks MODBUS Slave - Revision history

Z033 at 11:48, 12 November 2018

2018-11-12T11:48:11Z

Z033 at 12:17, 9 November 2018

2018-11-09T12:17:40Z

Z033 at 12:10, 9 November 2018

2018-11-09T12:10:21Z

Z033 at 12:03, 9 November 2018

2018-11-09T12:03:17Z

Z033: Created page with "=== Slave MODE === ===== MODBUS_GET_COIL ===== Reads the appropriate COIL value from the internal modbus table of values. {| class="wikitable" |in |OfsAdr |word | |register a..."

2018-11-09T12:01:15Z

Created page with "=== Slave MODE === ===== MODBUS_GET_COIL ===== Reads the appropriate COIL value from the internal modbus table of values. {| class="wikitable" |in |OfsAdr |word | |register a..."

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=== Slave MODE ===

===== MODBUS_GET_COIL =====
Reads the appropriate COIL value from the internal modbus table of values.
{| class="wikitable"
|in
|OfsAdr
|word
|
|register address (1-9999)
|-
|out
|ERR
|bool
|
|F = No error, T = occur any error
|-
|out
|ERR_ID
|word
|
|Error ID - see Error table
|-
|out
|Q
|bool
|
|return value
|-
|out
|R_TRIG
|bool
|
|for future use - not implemented
|-
|out
|W_TRIG
|bool
|
|for future use - not implemented
|}

===== MODBUS_GET_DISCRETE =====
Reads the appropriate DISCRETE value from the internal modbus table of values.
{| class="wikitable"
|in
|OfsAdr
|word
|
|register address (1-9999)
|-
|out
|ERR
|bool
|
|F = No error, T = occur any error
|-
|out
|ERR_ID
|word
|
|Error ID - see Error table
|-
|out
|Q
|bool
|
|return value
|-
|out
|R_TRIG
|bool
|
|for future use - not implemented
|-
|out
|W_TRIG
|bool
|
|for future use - not implemented
|}

===== MODBUS_GET_HOLDING =====
Reads the appropriate HOLDING register value from the internal modbus table of values.
{| class="wikitable"
|in
|OfsAdr
|word
|
|register address (1-9999)
|-
|out
|ERR
|bool
|
|F = No error, T = occur any error
|-
|out
|ERR_ID
|word
|
|Error ID - see Error table
|-
|out
|Q
|word
|
|return value
|-
|out
|R_TRIG
|bool
|
|for future use - not implemented
|-
|out
|W_TRIG
|bool
|
|for future use - not implemented
|}

===== MODBUS_GET_INPUT =====
Reads the appropriate INPUT register value from the internal modbus table of values.
{| class="wikitable"
|in
|OfsAdr
|word
|
|register address (1-9999)
|-
|out
|ERR
|bool
|
|F = No error, T = occur any error
|-
|out
|ERR_ID
|word
|
|Error ID - see Error table
|-
|out
|Q
|word
|
|return value
|-
|out
|R_TRIG
|bool
|
|for future use - not implemented
|-
|out
|W_TRIG
|bool
|
|for future use - not implemented
|}

===== MODBUS_SET_COIL =====
Writes the appropriate COIL value to the internal modbus table of values.
{| class="wikitable"
|in
|OfsAdr
|word
|
|register address (1-9999)
|-
|in
|VAL
|bool
|
|value to write
|-
|out
|ERR
|bool
|
|F = No error, T = occur any error
|-
|out
|ERR_ID
|word
|
|Error ID - see Error table
|}

===== MODBUS_SET_DISCRETE =====
Writes the appropriate DISCRETE value to the internal modbus table of values.
{| class="wikitable"
|in
|OfsAdr
|word
|
|register address (1-9999)
|-
|in
|VAL
|bool
|
|value to write
|-
|out
|ERR
|bool
|
|F = No error, T = occur any error
|-
|out
|ERR_ID
|word
|
|Error ID - see Error table
|}

===== MODBUS_SET_HOLDING =====
Writes the appropriate HOLDING register value to the internal modbus table of values.
{| class="wikitable"
|in
|OfsAdr
|word
|
|register address (1-9999)
|-
|in
|VAL
|word
|
|value to write
|-
|out
|ERR
|bool
|
|F = No error, T = occur any error
|-
|out
|ERR_ID
|word
|
|Error ID - see Error table
|}

===== MODBUS_SET_INPUT =====
Writes the appropriate INPUT register value to the internal modbus table of values.
{| class="wikitable"
|in
|OfsAdr
|word
|
|register address (1-9999)
|-
|in
|VAL
|word
|
|value to write
|-
|out
|ERR
|bool
|
|F = No error, T = occur any error
|-
|out
|ERR_ID
|word
|
|Error ID - see Error table
|}

===== MODBUS_TCP_SLAVE =====
This function block starts listening TCP MODBUS slave deamon on the appropriate port.
{| class="wikitable"
|in
|Port
|int
|
|Listening TCP port (default: 502)
|-
|in
|UnitID
|byte
|
|device bus address (1-247) (default: 1)
|-
|out
|ERR
|bool
|
|F = No error, T = occur any error
|-
|out
|ERR_ID
|word
|
|Error ID - see Error table
|}

← Older revision		Revision as of 11:48, 12 November 2018
Line 2:		Line 2:

	=== Slave MODE ===		=== Slave MODE ===
		+	MODBUS SLAVE contains 4 mapping arrays each with 9999 entries. The arrays are:
		+	* Coils (0xxxxx) - cells of type BOOL
		+
		+	* Discretes Input (1xxxxx) - cells of type BOOL
		+
		+	* Holding Registers (4xxxxx) - cells of type WORD
		+
		+	* Input Registers (3xxxxx) - cells of type WORD
		+	Lines 1..9999 correspond to the MODBUS address offset.
		+
		+	The default value for all cells in the arrays is '''NULL'''.
		+
		+	===== Reading values from arrays =====
		+	Use the ''MODBUS_GET_COIL'', ''MODBUS_GET_DISCRETE'', ''MODBUS_GET_HOLDING'', or ''MODBUS_GET_INPUT'' function block to locally read array values.
		+
		+	For remote reading of array values, use the standard MODBUS function via TCP connection.
		+
		+	<u>NOTE: If you try to read a NULL value, the INVALID VALUE error is returned.</u>
		+
		+	===== Write the values to the arrays =====
		+	Use the ''MODBUS_SET_COIL'', ''MODBUS_SET_DISCRETE'', ''MODBUS_SET_HOLDING'', or ''MODBUS_SET_INPUT'' function block to locally write array values.
		+
		+	Remote values can be writen to Coils and Holding arrays. For write, use standard MODBUS functions via TCP connection.
		+
		+	===== Application =====
		+	MODBUS TCP SLAVE is useful if you need to provide a state of your own inputs for remote devices. For example, the switch on/off state of the button is provided for another device.
		+
		+	Similarly, if you need to set the status of the local relay from another device.

	===== MODBUS_GET_COIL =====		===== MODBUS_GET_COIL =====

← Older revision		Revision as of 12:03, 9 November 2018
Line 1:		Line 1:
		+	== [[Libraries for IEC 61131-3\|Back to Libraries]] ==
		+
	=== Slave MODE ===		=== Slave MODE ===

@@ Line 276: / Line 276: @@
 |Error ID - see Error table
 |}
 ===== MODBUS_TCP_SLAVE =====

@@ Line 42: / Line 42: @@
 |for future use - not implemented
 |}
 ===== MODBUS_GET_DISCRETE =====