Hitachi NJI-350B - Manual (Page 168)

Chapter 5 Instruction specifications
5-118
[9] Timeout :
This bit is set "1" when timeout detected.
[A] Input buffer full :
This bit is set "1" when input buffer full
[B] Conflict error :
This bit is set "1" when TRNS 0 or RECV 0 commands are duplicated.
Bit [6] to [B] is reset at initializing and TRNS 0 executed.
(7) Sending/receiving data format
Set sending data as follows, and Receiving data is set as follows.
[1] Sending/receiving data byte is even. [2] Sending/receiving data byte is odd.
Sending/Receiving data byte (N)
1 st byte 2 nd byte
3 rd byte 4 th byte
5 th byte 6 th byte
7 th byte 8 th byte
N-1 th byte N th byte
…
Reserve area
for data
sending/receiving
Sending/Receiving byte (N)
1 st byte 2 nd byte
3 rd byte 4 th byte
5 th byte 6 th byte
7 th byte 8 th byte
N th byte (ignored)
…
N-2 th byte N-1 th byte
Caution
z
Be sure to switch port type at first from dedicated port to general purpose port by FUN 5 command in user program.
z
If CPU receives data by RECV command after data sending, received data could be failed depending on timing. In such a
case, TRNS command with "receive enabled" is recommended.
z
No contact nor condition is allowed to use with TRNS 0 command.
z
Be sure to set [0] Execution bit high in 2 nd scan or later. (Not in 1 st scan)
z
If parameter setting is wrong, error code H52 (TRNS/RECV command error) is set in WRF000 in some cases.
z
ER signal is set on in the following condition.
Communication executed properly.
z
ER signal is set off in the following condition.
- Initialized bit being set "1" while communication.
- CPU status changed RUN →STOP→RUN while communication
- Timeout while communication.
- s, t parameters overwritten and range error while communication.
TR
N
S
0
(
d, s, t)