1. Multivariable Serial Interface
Preliminary
MSI
Multivariable Serial Interface

2. MSI - Multivariable Serial Interface
Interfaces Honeywell’s digitally enhanced (DE) field instruments with PLCs, RTUs and PCs.
RS-232/485
Modbus, etc.
Single Channel
Ganged Network

3. Key Features Processes all DE communications traffic.
Translates DE data into standardized formats.
Any DE broadcast mode and format.
Expandable channel capacity & multidrop.
Provides “BAD PV” protection.
Accommodates handhelds and host DCS activity.