Blocks IPWatchdog - Revision history

Z013 at 04:17, 21 May 2020

2020-05-21T04:17:29Z

Z013 at 05:24, 16 April 2020

2020-04-16T05:24:38Z

Z013 at 10:12, 15 April 2020

2020-04-15T10:12:54Z

Z013 at 07:37, 15 April 2020

2020-04-15T07:37:56Z

Z013 at 07:37, 15 April 2020

2020-04-15T07:37:37Z

Z013 at 07:35, 15 April 2020

2020-04-15T07:35:15Z

Z013 at 07:35, 15 April 2020

2020-04-15T07:35:00Z

Z013 at 07:34, 15 April 2020

2020-04-15T07:34:28Z

Z013 at 07:33, 15 April 2020

2020-04-15T07:33:47Z

Z013 at 07:21, 15 April 2020

2020-04-15T07:21:17Z

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 == Description: ==
 The IPWatchdog blocks are used to verify the availability of a remote IP address based on an ARP or ICMP query.
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 === IPWDG_ARP ===
-Returns ARP ping status of given ip address
+Returns ARP ping status of a give IP ip address
 [[File:IPWDG_ARP.png]]
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 |string
+|
-|ip address
+|IP address
 |-
 |in
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 === IPWDG_ICMP ===
-Returns ICMP ping status of given ip address
+Returns ICMP ping status of a give ip address
 [[File:IPWDG_ARP.png]]
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 |string
+|
-|ip address
+|IP address
 |-
 |in
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 '''Block behavior:'''
-The pulse on EXEC triggers the IPWDG block. In the beginning ICMP/ARP request is send to the IP address. At the same time BUSY output changing the status of the log. 0 to 1, TMO_S running and block is waiting for response.
+The pulse on EXEC triggers the IPWDG block. In the beginning a ICMP/ARP request is sent to the IP address. At the same time the BUSY output is changing the status of the log. 0 to 1, TMO_S running and the block is waiting for a response.
-. If a '''response is received''' during TMO_S, TMO_S is reseted. BUSY is set to log. 0, VALID is set to 1 (operation successful, output set) and Q is set to log. 1 (IP is available).
+. If a '''response is received''' during TMO_S, TMO_S it is reset. BUSY is set to log. 0, VALID is set to 1 (operation successful, output set) and Q is set to log. 1 (IP is available).
 . If a '''response is not received''', BUSY remains in the log. 1 until TMO_S expires. After TMO_S expires BUSY goes to log.0, VALID goes to log.1 (operation successful, output set). Q remains in log. 0 (IP is not available).
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 '''Note:'''
-'''EXEC''' should be set to a value greater than TMO_S to avoid unnecessary restart when the block cycle is not completed and waits for TMO_S.
+'''EXEC''' should be set to a value greater than TMO_S to avoid unnecessary restarting when the block cycle is not completed and is waiting for TMO_S.
 == Examples ==
-GEN_PULSE generates pulse every T#2s (2 seconds) to trigger IPWDG block. Within one cycle block waits to answer from the remote device (IP_ADDR) for TMO_S timer. If the remote device does not respond by this time, the output is set to log. 0. Otherwise, the output is set to log. 1.
+GEN_PULSE generates a pulse every T#2s (2 seconds) to trigger the IPWDG block. During one cycle block it is waiting for an answer from the remote device (IP_ADDR) for TMO_S timer. If the remote device does not respond by this time, the output is set to log. 0. Otherwise, the output is set to log. 1.

← Older revision		Revision as of 05:24, 16 April 2020
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		+	<font color="red" size="+1">This page is beign temporarily revised with the newest updates.</font>
		+
		+
	== Description: ==		== Description: ==
	The IPWatchdog blocks are used to verify the availability of a remote IP address based on an ARP or ICMP query.		The IPWatchdog blocks are used to verify the availability of a remote IP address based on an ARP or ICMP query.

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 |status
 |}
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 '''Note:'''
 '''EXEC''' should be set to a value greater than TMO_S to avoid unnecessary restart when the block cycle is not completed and waits for TMO_S.

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 == Examples ==
 GEN_PULSE generates pulse every T#2s (2 seconds) to trigger IPWDG block. Within one cycle block waits to answer from the remote device (IP_ADDR) for TMO_S timer. If the remote device does not respond by this time, the output is set to log. 0. Otherwise, the output is set to log. 1.
 '''IPWDG_ICMP'''

← Older revision		Revision as of 07:37, 15 April 2020
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	== Examples ==		== Examples ==
		+	GEN_PULSE generates pulse every T#2s (2 seconds) to trigger IPWDG block. Within one cycle block waits to answer from the remote device (IP_ADDR) for TMO_S timer. If the remote device does not respond by this time, the output is set to log. 0. Otherwise, the output is set to log. 1.
		+
	'''IPWDG_ICMP'''		'''IPWDG_ICMP'''

← Older revision		Revision as of 07:35, 15 April 2020
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	[[Libraries for IEC 61131-3\|Back to Libraries]]		[[Libraries for IEC 61131-3\|Back to Libraries]]
		+

	=== IPWDG_ARP ===		=== IPWDG_ARP ===

← Older revision		Revision as of 07:34, 15 April 2020
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−	[[Libraries for IEC 61131-3\|Back to Libraries]]	+	==== [[Libraries for IEC 61131-3\|Back to Libraries]] ====

	== Description: ==		== Description: ==

← Older revision		Revision as of 07:33, 15 April 2020
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		+	[[Libraries for IEC 61131-3\|Back to Libraries]]
		+
	== Description: ==		== Description: ==
	The IPWatchdog blocks are used to verify the availability of a remote IP address based on an ARP or ICMP query.		The IPWatchdog blocks are used to verify the availability of a remote IP address based on an ARP or ICMP query.

← Older revision		Revision as of 07:21, 15 April 2020
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−
−	~~out ERR bool indicates some error occurs (0 = OK)~~
−	~~out ERR_ID WORD identifies occured error by unique code~~

	=== IPWDG_ICMP ===		=== IPWDG_ICMP ===