Typical Applications; Operating Parameters - GE MDS SD4A Technical Manual

Table 2. Application Types vs. Key Radio Settings
Application
Polled Bridged Ethernet
Bridged Ethernet
Mixed Serial and Bridged
Ethernet
Report by Exception
Single Poll Multiple
Response
Two or more concurrent
serial polling applications
(COM2, COM1, and /or
IP Payload at master
Single Port Serial Polling
with encryption (COM2 or
COM1)
Single Port Serial Polling
without encryption
(COM2, COM1, or IP
Payload at master)
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3.0 TYPICAL APPLICATIONS

This section describes common scenarios the transceiver may be used
in. A number of variations are possible; If you have unique requirements
not found here, it is recommended that you consult a support specialist
at GE MDS. Contact information is provided at the back of this manual.

3.1 Operating Parameters

The transceiver can operate in both poll-response and "push" communi-
cation/report-by-exception networks. In poll-response networks a cen-
tral Master unit communicates with a number of Remote radios one at a
time. The Master exchanges data with the currently-connected Remote,
and when finished, it establishes a new connection with the next Remote
in the polling order. In push communication/Report by Exception net-
works, a Remote can also transmit if it has data to send, typically
prompted by a change in status conditions from connected data equip-
ment.
The radio includes a number of parameters which may be set to suit the
requirements of a particular application. Table 2 provides a summary of
common applications, protocols, and radio modes used. Refer to the
table to determine what applications can be supported and the required
radio settings.
Protocol Recommended
(Example) Radio Mode
MODBUS TCP Packet w/MAC
IP(ICMP/TCP/UDP/ Packet w/MAC
MODBUS TCP)
MODBUS RTU & IP Packet w/MAC
Serial and/or IP Packet w/MAC
Serial and/or IP Packet w/MAC
DNP3 and Modbus Packet w/MAC
RTU
Modbus RTU Packet
Modbus RTU Transparent
SD Series Technical Manual
Notes
May also use Packet mode and enable LBT
w/Listen on RX.
May also use Packet mode and enable LBT
w/Listen on RX.
AES On
AES Off
MDS 05-4846A01, Rev. F