Meteor Communications Corporation MCC-545C, Operation And Maintenance, Page: 41 / 88

OPERATIONS 4-5
MCC-545C PACKET DATA RADIO
12/2000
MCC-545C. You will no longer be able to issue commands. Power cycling will not help either
because your change will be retained in RAM, even through power cycling. However, you can
always recover by removing the lid on the MCC-545C and pressing the Reset button (S1). This
will reboot and restore the EEPROM settings.
Alternatively, assume you want to change the operator port to MSC. You connect in ASCII
protocol, command the change to MSC protocol, then switch you PC to also use MSC protocol.
Operation resumes and all is well. But do not forget to do a SAVE. If the software ever reboots,
it will revert back to ASCII. And remember, once you do the SAVE you are committed to MSC
protocol. The Reset button now reboots to MSC and there is no easy way back to the factory
default settings. You will need an MSC capability to command a change back to ASCII.
4.2.2 Selecting MCC-545C Remote/Master Operation
The MCC-545C can operate as either a Remote Station or as a Master Station. Use the DEVICE
command to select the mode you require.
For normal MCC-545C Remote Station operation, enter:
DEVICE,REMOTE
For MCC-545C operation as a Master Station, enter:
DEVICE,MASTER
NOTE
Additional MCC-545C commands are available when DEVICE,MASTER is selected. There is
no help for this command.
4.2.3 Selecting Network Parameters
MCC recommends using the given default network parameters (values that are set on power-up
or after reset). If you choose to change these parameters, first review the discussion in this
Section and in Section 4.8.5, then use the following commands to change to the desired settings:
SNP{,pname,value}
where "pname" is the network parameter and "value" is a limit dependent on "pname". The
"pname" parameters are as follows:
TTL – Time-to-live in minutes (default is 120 minutes); this is the time limit for a
message to reach its destination before it is deleted from the queue.
The time-to-live parameter input is truncated to a 10-minute boundary. If you
enter 60 through 69, the TTL for the next message will be 60 minutes. A resultant
value of 0 (parameter range 0 – 9) means the message will never time out.