Intermec EasyCoder PM4i User Manual page 97

Chapter 8 — Intermec Shell Startup Program
6 = "usb1:"
7 = "uart4:"
8 = "uart5:"
If the printer is not fitted with the specified port, an error
message appears in the display and you can select another port:
Line Analyzer
Error: 56
EasyCoder PM4i Printer User's Guide (Fingerprint Version) 81