54
6
F
3
B
0
3
5
6
*3 The T and C registers hold data that has flags attached.
Supplement:
The transfer data length has a maximum of 323 words when data is transferred over the
Ethernet.
For the T registers, it is not possible to designate a range that spans both the basic T registers
(0 to 511) and the expansion T registers (512 to 999). The T3H has the expansion T register,
but the T2N does not have.
(c) Status (See 7.3 (5) for details on bits C, D, E, and F.)
F
E
D
C
B
A
9
8
7
6
5
4
3
2
1
0
B
0
0
0
0
TermSTS
B+1
Detailed information (Only valid when TermSTS = 0BH.)
(d) Important items
•
The command number (0000H) is the same as the "Data Read".
•
A transfer size error (TermSTS = 09H) occurs if the transferred register data length exceeds
the range 1 to 128 words (or 1 to 83 words for the T and C registers).
•
A register designation error (TermSTS = 01H) occurs if a value other than a stipulated value
is designated for the register type codes (Register type (self/target-station)).
•
A register designation error (TermSTS = 01H) occurs if 0007H (the T register) is designated
for the local station register type code and a register other than T register is designated for
the remote station register type code. This also holds for the C register.
•
A boundary error (TermSTS = 0AH) occurs if a range spanning both the base T registers
(0 to 511) and the expansion T registers (512 to 999) is designated for the T register.
•
For data storage registers, a boundary error occurs if the designated area (leading a
register range) does not exist in either the local or remote stations.
Local station : TermSTS = 0AH ; Remote station : TermSTS = 8AH
•
A response time-out error (TermSTS = 02H) occurs if the response time from the remote
station exceeds the time designated by the response time limit.
