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mycnc:modbus_setup

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mycnc:modbus_setup [2019/07/29 15:53]
ivan
mycnc:modbus_setup [2019/09/12 10:40] (current)
ivan
Line 43: Line 43:
 Using the I/O Expand cards mapping window allows for a guaranteed signal delivery even if the Modbus device was turned off when the initial signal was sent (for example, when changing the Binary Outputs status from OFF to ON in the System Diagnostics window). However, a certain amount of latency (up to 100-200 ms) is introduced, as the system has to regularly loop through and check for the inputs/​outputs on the Modbus device. Therefore, using I/O expansions via a Modbus device is recommended on systems which are less time-critical. ​ Using the I/O Expand cards mapping window allows for a guaranteed signal delivery even if the Modbus device was turned off when the initial signal was sent (for example, when changing the Binary Outputs status from OFF to ON in the System Diagnostics window). However, a certain amount of latency (up to 100-200 ms) is introduced, as the system has to regularly loop through and check for the inputs/​outputs on the Modbus device. Therefore, using I/O expansions via a Modbus device is recommended on systems which are less time-critical. ​
  
-**NOTE:** The latency ​becomes larger when more mapping devices are introduced, as the system loops through each such device one at a time. +**NOTE:** The latency ​will increase as more mapping devices are introduced, as the system loops through each such device one at a time. 
  
 ====Using Modbus through PLC commands==== ====Using Modbus through PLC commands====
mycnc/modbus_setup.txt ยท Last modified: 2019/09/12 10:40 by ivan