9
Limitorque MX DeviceNet Field Unit FCD LMENIM2328-00 – 11/05
flowserve.com
Table 1.1 – Network specifications
Network Size Up to 63 Nodes
Network Length Selectable end-to-end network distance varies with speed
125 Kbps 500 m (1,640 ft)
250 Kbps 250 m (820 ft)
500 Kbps 100 m (328 ft)
Bus Topology Linear (trunkline/dropline); power and signal on the same network cable
Bus Addressing Multi-Master and Master/Slave special case; polled of change-of-state
(exception-based)
System Features Selectable end-to-end network distance varies with speed
Termination resistor (121 ohms) must be used at each end of the network
1.5.1.2 MX Field Unit Specifications
CIP Generic Device Profile (Device Type = 00hex) extended to DNFU requirements
Group 2 Server
UCMM capable device
Predefined Master/Slave Connection Set supporting
Explicit Connection
Polled I/O Connection
Bit-Strobed I/O Connection
Change of State / Cyclic I/O Connection
Full support of fragmentation protocol
Device Heartbeat Message
Device Shutdown Message
Offline Connection Set
Galvanical Isolation: The isolation voltage for the DNFU is up to 1,500 VRMS for 1 minute (1,800
VRMS for 1 second
Power Supply: The DNFU Interface will be powered from the DeviceNet bus. A switching regulator is
used to generate the internal supply voltage: VCC nominal 5.0 V ± 5 %
Surge Suppression: The DNFU Interface is equipped with surge suppression for the DeviceNet
network data and power lines. Surge suppression is compliant with IEC 61000-6-2:2001.
Environmental conditions
The DNFU environmental parameters are within the same environmental constraints as the actuator.
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
