By using a GRT Instruction, we can trigger the MSG Instruction once per cycle of our timer. This allows us to build a structure which will constantly increment the timer and reset once it reaches the peak. In order to accomplish this, we’re going to leverage a simple repetitive timer through a TON Instruction, paired with an XIO Instruction based on the completion. Our first step is to establish a ladder logic structure in order to accommodate the MSG instruction. MSG Instruction Programming in Ladder Logic Studio 5000 Furthermore, the same instruction would work between any RSLogix/Studio 5000 and RSLogix 500 based Programmable Logic Controllers. Both of these are heavily utilized in the current manufacturing environments and provide an excellent testing platform. This instruction would be utilized within the RSLogix 5000 or Studio 5000 programming environments on an Allen Bradley PLC and Write or Read data from a different PLC.įor the purpose of this tutorial, we will be covering the communication between a MicroLogix 1100 PLC and a CompactLogix L24ER PLC. One of the simplest ways to pass data between two controllers would be through the use of the MSG instruction. However, in the current manufacturing environments, it’s an absolute must. Sending data between two Programmable Logic Controllers can pose a challenge.
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