What happen to this PMS link ?? always down. normal link is ---> Tx: 1![5]
Rx: [6]
Tx: 1![5]
Rx: [6]

Problem link -----> Tx: 1![5]
Rx: [6]
Tx: 1![5]
Rx: [16] <--- after receive this then... the rest Rx: is ? mark.
Tx: 1![5]
Rx: ?
Tx: 1![5]
Rx: ?

Why ? I just did the cmd D101:0000>0000: ccc
and cmd D102:0000>1600:ccc , then programme back the PMS command, the PMS link back to normal. the problem will occur maybe few hour/day later... when Rx: is [16]

Plese help..... Thank You