Contemporary Control Systems BASrouter Portable Installation Guide (Firmware 2.6.x) - Manual (Page 17)

TD070210-0IG
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The Status Screen refreshes automatically — so you can watch the router
MS/TP state change and gain insight into the condition of the MS/TP
network (as seen by the router). For example, if “MNSM” always
reports SoleMaster or PollForMaster, after repeated refreshes, then the
router cannot communicate with any MS/TP devices.
“Available Memory” is the amount of RAM remaining after buffers are
allocated. If one network is temporarily offline and another network is
attempting to communicate with this network, the available memory may
drop very low until the offline network returns to an online condition.
“TX PFM Count” is the number of Polls For Master transmitted
“RX PFM Count” is the number of Poll For Master received.
“TX Token Count” is the number of tokens transmitted.
“RX Token Count” is the number of tokens received.
“Invalid Long Frames” is the number of frames received that have a
length exceeding 1024.
“Clear Silence Timer” is the number of times the Silence resets because
its value is too large.