Master command list contains up to 100 individual entries. Event command control blocks may be used to send additional Modbus commands directly from the ladder logic to one of the master ports. Read More

A conditional command is useful when the same value does not need to be written to the end device continuously, but rather on change.  A conditional write command is scanned based upon its poll rate (like all other commands).  The... Read More

Since RSLogix uses signed integers, the highest positive value that can be entered is 32767.  To avoid this issue, when specifying higher baud rates, Prosoft modules only require the first 3 digits of the baud rate. e.g., to enter a... Read More

Due to timing variations in various Modbus devices, it is possible for a Modbus master to have problems sending write commands to the MCM slave port while having no issues with read commands. In such cases, the "Use Guard Band" and "Guard Band... Read More

On bottom of the circuit board for any MVI products, you' ll find three jumper banks: COM1, COM2, and Setup. Each jumper position is labeled 232, 422 and 485. Read More

To view the floating-point value, the two 16-bit integers must be copied to a floating-point variable in the processor. For PLC and SLC processor, a COP command is used, with the source being the first integer value location, the dest being the F... Read More

Almost all ProSoft solutions for serial based protocols support RS-232C, RS-485 and RS-422 electrical interface types, but equally important is the 'language' or application layer protocol needed for your application. ProSoft... Read More