Rockwell Automation Allen-Bradley Compact 5000 Series - Page 86

86 Rockwell Automation Publication 5069-UM003B-EN-P - January 2020
Chapter 4 Compact 5000 I/O Serial Module Configuration
Current Manual Calculation Check
The following is an example of master command memory usage.
• Maximum single connection configuration for registers:
– 223 words * 2 bytes/word read = 446 input bytes
– 241 words * 2 bytes/word written = 482 output bytes
• Maximum single connection configuration for coils:
– 3576 bits / 8 bits/byte read = 447 input bytes
– 3856 bits / 8 bits/byte = 482 output bytes
Modbus Slave Example
Figure 27 - Modbus Slave Module Definition Parameters
IMPORTANT On the module definition screen, you will see two options at the top for
moving the commands up and down. If either of these buttons are used,
make sure that the user program is adjusted to reflect the new location of
the command or the program will show and error.