Flowserve MX-100 Field Unit - Manual (Page 7)

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MX/DDC-100 Field Unit Installation and Maintenance FCD LMENIM2329-01 – 03/11
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1.6 General Specifications
Direct-to-Host Specifications:
Direct connection to host controller •
Communicates using the Modbus protocol and the RS-485 electrical standards •
Configurable bitmap •
High-level surge protection on network •
Network Specifications:
Redundant bi-directional loop or daisy chain topology •
Modbus protocol and the RS-485 electrical standards •
High speed—up to 19.2 kbaud communications •
MX Field Unit Specifications:
“ • OPEN,” “STOP,” and “CLOSE” commands
“ • ESD” and “MOVE–TO” position commands
Actuator status and alarm messages •
Six digital inputs and two analog inputs for user (see • Table 2.2, Register Definitions)
Two surge-protected and mutually isolated communication channels •
MX local control panel configuration •
Torque output (for reference only) and position feedback •
User’s analog input feedback •
Nine digital outputs maximum (three standard/six optional) •
Master Station II (Optional) Specifications:
Supports all Limitorque DDC-100 field units: MX, L120, LY •
Controls up to 250 MOVs •
User-friendly touch panel operator interface: •
Permits configuration and control of DDC-100 network •
Configures communication to host or DCS (Distribution Control System) •
Password protected •
Optional Hot Standby Configuration: Automatically assumes control on Primary Master Failure or on command •
from the DCS or touch panel
Provides realtime status of field units through continuous cyclical polling
•
Modbus RTU and TCP/IP: •
Addressable •
RS-232/485/422 •
10/100 baseT •
Built-in Web server for ease of actuator and network diagnostics •