NPM Motionnet G9001A, User Manual

Page: 59 / 125

DA70131-1/3E
II-9
4-4-6.
______
DNSO
The numeric equivalent of the address on
____
DN0 to
____
DN5 + 1 will be output after being converted into a serial bit
stream.
Connect this output to another local device's
____
DN0 terminal (make all the other DNSM terminals of that local device
LOW), so that other devices can get the address and pass it along to the next data-sending device.
Please note that the next address after "3Fh" (
____
DN0 to
____
DN5 = " 000000") is "00h."
In the case that a continuous address by
_______
DNSO signal is set, it is necessary at least approximately 50 µs until the
next step address is confirmed.
4-4-7. SPD0, SPD1
Set the communications speed
All of the devices on the same communication line must be set to the same speed.
SPD1 SPD0 Communication speed
L L 2.5 Mbps
L H 5 Mbps
H L 10 Mbps
H H 20 Mbps
4-4-8. TUD
A watchdog timer is included on the chip to assist in administration of the communication status (see the "TMD"
terminal section).
When the data transmission interval from a center device to this device exceeds the set time, the watchdog timer
times out.
This terminal is used to set output conditions when the watchdog timer times out.
When TUD = HIGH --- The LSI keeps its current status.
When the TUD = LOW --- The LSI is Reset.
4-4-9. TMD
Specify the time for the watchdog timer.
The watchdog timer is used to administer the communication status.
When the interval between data packets sent from a center device is longer than the specified interval, the
watchdog timer times out (the timer restarts its count at the end of each data packet received from a center device).
The time out may occur because of a problem on the communication circuit, such as disconnection, or simply
because the center device has stopped communicating.
The time used by the watchdog timer varies with communication speed selected.
TMD terminal
Watchdog timer setting
20 Mbps 10 Mbps 5 Mbps 2.5 Mbps
L 5 ms 10 ms 20 ms 40 ms
H 20 ms 40 ms 80 ms 160 ms
4-10.
______
TOUT
Once the watchdog timer has timed out, this terminal goes LOW.
4-4-11. SO
Serial output signal for communication. (Positive logic, tri-state output)