KB-30715: Negative values not being read properly
Question: Why are the negative values not being read properly? Solution: To fix the problem, you must change the Modbus function’s Datatype to Int (16 or 32). To do so,…
Category: Modicon Modbus Master (ASC/RTU/TCP)
KB-30656: Reading Modbus 40100 variable.
Question: How can I configure an I/O Tag to read a Modbus 40100 address? Solution: To do so, after you have configured the communication physical layer, follow these procedures in…
KB-29438: Communicating with Siemens CPU 315-2PN/DP PLC.
Question: What drivers can be used to communicate with a Siemens CPU 315-2PN/DP PLC via ethernet? Solution: For communication between either Elipse’s supervisory systems (E3 or SCADA) and Siemens CPU…
KB-23112: I/O Block’s ideal size with Modbus driver.
Question: What is better for communication performance purposes: one single block with 1,100 elements, or the same number of elements split into smaller blocks? Solution: Support to superblocks has been…