iRIS 350FX Reference Manual V1.50
74
HyQuest Solutions (NZ) Ltd
- PO Box 9466, Hamilton, New Zealand Tel: +64 7 857-0810 Email: [email protected]
Non-Dedicated RS232 Telemetry Mode
If the iRIS is fitted with an active internal wireless modem, then RS232 telemetry mode must be enabled by
a special cable which uses the RI handshake pin to enable the telemetry mode. Refer to the diagram below.
In non-dedicated telemetry mode, any call-back messages will always be directed out the wireless
port. Also, if a packet to be forwarded by the gateway is received from the RS232 port and the
wireless connection is not currently active the iRIS will initiate a connection.
In non-dedicated mode, if gateway communication is configured it will be in “bridging” mode. This is where
data packets are redirected (bridged) between the wireless port (IP or CSD) and the RS232 port. This scenario
is used when for example; an iRIS is used to bridge an IP connection to other loggers only reachable by radio.
The diagram below shows a typical cable required to enable RS232 telemetry in non-dedicated mode. The
actual modem/radio connections may vary depending on the type of device used. The DSR line from the
modem or radio is used to enable the RS232 port and the RI line enables the binary only mode and sets the
port speed to the one configured in the communications configuration menu.
Figure 10 - Typical RS232 / Data Radio Cable
In this mode, the RS232 telemetry mode is controlled by the cable. If it is unplugged and a standard
null-modem cable connected, the iRIS RS232 port will immediately switch back to normal port
operation, with the usual terminal and binary communications at 38400bps. The connection icon
(house) will always indicate the status of the wireless connection only.
Gateway Communication
The iRIS supports a powerful communication function - gateway, or redirected communications. Simply put,
this allows an iRIS to transfer packets of data between ports, totally in the background without any
programming required (beyond setting up the gateway offset.)
Uses include:
Radio comms repeater function
IP to radio bridging
When an incoming data packet is received from either communications port, the iRIS does the following:
AUX_RXD (IN) 3
AUX_TXD (OUT) 11
0V (SIGNAL) 15
GPIO4 BUSY (OUT) 10
+13V8 (OUT) 8
WHITE
YELLOW
BLACK
BLUE
RED
2 RXD (IN)
3 TXD (OUT)
5 OV (SIGNAL)
8 CTS (IN)
6 DSR (IN)
FRAME GND
Tait TM80xx Radio
DB15 (M)
iRIS Datalogger
DB9 (F)
SCREEN
9 RI (IN)
10K
FLYING LEAD
TO DIG OUT
GPIO6 ENABLE (IN) 9
GREEN
Содержание iRIS 350FX
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