User's Manual

905U-K Radio Telemetry Module User Manual
 ELPRO Technologies Pty Ltd 2001 Page 38
modules as repeaters,
Antenna Connector SMA coaxial
Serial Ports
RS232 Port DB9 female DCE 9600 baud, no parity, 8 data bits,
1 stop bit
Data transmission
- digital inputs
On change-of-state +
after update period
elapsed
Update time configurable 10 secs
- 5 days. Separate, faster update
time may be configured when
input is ON
Data transmission
- pulse inputs
Transmitted as pulse
count
Transmitted when count change
exceeds configured amount, or on
time elapsed since last
transmission (configurable 10
secs - 5 days)
Data transmission
- Up/down pulse input
2 pulse inputs may be
configured to a single
count
Suitable for quadrature or
incremental shaft encoders.
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 2 inputs Share digital inputs. Max rate
1000Hz, min. pulse width 3ms.
Analogue Input One 0 - 20 mA
(suitable for 4 - 20 mA,
0 - 10mA & 0 – 5 Volts)
“floating” differential input,
common mode voltage 24V.
24V DC for powering external
loops provided, 30 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