Westermo RM-505U-2-E - Manual (Page 43)

User Manual
MAN_505_1.7.DOC Page 43
Data transmission
- analogue input On change-of-state + after
update period elapsed Sample time configurable 10 secs -
5 days. Change of state sensitivity
configurable 0.05 to 20mA.
Update time configurable 10 secs -
5 days.
Protocol Addressed data frame with
16 bit CRC,
synchronous DFSK Each transmission may be
configured to be sent 1 - 5 times
Inputs
Digital Inputs 2 inputs Suitable for voltage free contacts or
NPN transistor, input debounce 0.5
second
Pulse Inputs 505U-2 - 2 inputs Share digital inputs. Max rate
100Hz, min. pulse width 3ms.
Analogue Input One 0 - 20 mA
(suitable for 4 - 20 mA, 0
- 10mA)
“floating” differential input,
common mode voltage 15V. 10 -
12V DC for powering external
loops provided, 25 mA max.
Resolution 12 bit, Accuracy <
0.1%. Transducer warm-up time
configurable 1 - 255 seconds.
Analogue Input Setpoint Configurable high & low setpoint
may be transmitted to remote units,
allowing set/reset of remote digital
outputs
System Parameters
Network Configurations Max. number of 505U
inputs is >20 000 if 105U-
C modules are used as
receivers. 505U is compatible with 105U
radio telemetry units which may be
used as repeaters, provision of
outputs, or as network master unit
to connect to PLC or PC
User Configuration Configuration Software
Diagnostics
On board diagnostics Automatic check on
startup Microprocessor operation OK