ICP DAS USA TDRS4050601 - Manual (Page 50)

Industrial Redundant Ring Switch – RS Series User Manual
TDRS4050601 o
value) indicates the actual operating value. When applying redundancy mode, the
actual rtime value can be only set up by modifying master switch rtime value.
Parameters
Parameter Description
time Provides the time interval(ms) that you want to set
up as the recovery time
Example:
Use the following function to calculate an adequate rtime:
rtime = [Round(0.3*(N+1))]*100 ms
N: number of switches
Example:
If there are 5 switches(including master switch), the adequate
rtime will be:
[Round(0.3*(5+1))]*100 = Round(1.8) *100 =2*100 =200 ms
ftime [time]
Description
This command enables you to set up the spanning tree bridge forward delay in
milliseconds(ms) . Forward delay is the time interval spent waiting to change a port
from its spanning tree pre-forwarding state to a forwarding state. This is necessary
because every bridge on the network should ensure no loop is formed before
allowing the port to forward packets.
To setup the forward time manually, you are required to switch the SW1 Jumper 4 to
“on” position (applying STP protocol), and SW2 to position „0‟ (if the SW2 position is
not on „0‟, a preset value will be applied according to its corresponding position,
please refer to Appendix G, Table
– 15. If SW1 jumper 4 is not on “on” position; that
is, not applying STP protocol, ftime is not applicable)
Parameters
Parameter Description
time Provides the time interval(ms) that you want to set
up as the forward time
Example: