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modbus TCP IP communication

Created by: MUKUL NIKAM at: 4/24/2013 9:07 AM (4 Replies)

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4/24/2013 9:07 AM	Rate (0)
MUKUL NIKAM Posts: 24 Rating: (0)	I am using modbus TCP IP communication for project.CPU-315 PN DP is client and I am able to communicate with other CPU 300 as server. for testing I am using example projects from modbus library.But in actual project I have to execute TWO SEPRATE QUERIES WRITE holding registers and READ input registers. I want to ask that what modification I have to do for executing both queries simultaneously ? CAN I USE TWO MODBUSPN FUNCTION BLOCK FOR EACH QUERY?
MUKUL NIKAM Posts: 24 Rating: (0)	Last edited by: O_Moderator at: 4/24/2013 12:19 PM new subject after splitting from /tf/WW/en/Posts/88457#top Last edited by: muks at: 4/24/2013 9:10 AM Last edited by: muks at: 4/24/2013 9:10 AM
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4/24/2013 11:24 AM	Rate (0)
Kaulquappe Posts: 3093 Rating: (323)	Hello Muks, the Modbus protocol doesn't support to run different requests simulatneously. You have to do it sequentially. Regards, Kaulquappe
Kaulquappe Posts: 3093 Rating: (323)
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4/25/2013 12:52 PM	Rate (0)
MUKUL NIKAM Posts: 24 Rating: (0)	That means I have to toggle in between two different runtime parameters for read and write after each successful query.
MUKUL NIKAM Posts: 24 Rating: (0)
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4/25/2013 3:02 PM	Rate (0)
Kaulquappe Posts: 3093 Rating: (323)	muks That means I have to toggle in between two different runtime parameters for read and write after each successful query. yes
Kaulquappe Posts: 3093 Rating: (323)
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4/27/2013 8:04 AM	Rate (0)
MUKUL NIKAM Posts: 24 Rating: (0)	Thak you kaulquappe
MUKUL NIKAM Posts: 24 Rating: (0)
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