Mitsubishi Electric A1SJ71DN91 User Manual page 45

3. SPECIFICATIONS
Buffer Memory
Address (16 hex)
01D4 Host station (MAC ID)
H
01D5 Baud rate
H
01D6H, 01D7H Not used
Station number for the first slave
01D8
H
station
Connection type for the first
01D9
H
slave station
Number of byte modules for the
01DA
H
first slave station
Number of word modules for the
01DB
H
first slave station
Number of double-word modules
01DC
H
for the first slave station
Expected packet rate for the first
slave station (EXPECTED
01DD
H
PACKET RATE)
(14) Parameters (Address 0154
Used to set parameters via the sequence program.
The parameters set by a sequence program are written to E
Once parameters have been set, they do not require setting again until changes are
made to the parameters.
parameters, the parameters from E
Follow the procedure below to write new parameters.
(a) Set parameters in the parameter area, as shown in Table 3.20.
(b) Turn ON the parameter set request (Y(n+1)7) with a sequence program.
(c) The set parameters are written.
Table 3.20 Parameter Set Data
Item
Stores the station number (MAC ID) of DN91 in a range from 0000
Setting parameters with this value set at FFFF
have been set by the sequence program.
Select the baud rate:
1 = 500 Kbps, 2 = 250 Kbps, 3 = 125 Kbps

Lower byte: Station number (MAC ID) of first slave station
Upper byte: 01
Select the connection type for I/O communication:
0001
0002
0004
0008
Lower byte: Number of input byte modules
Upper byte: Number of output byte modules
(8 points of bit modules are calculated as one byte module.)
Lower byte: Number of input word modules
Upper byte: Number of output word modules
Lower byte: Number of input double-word modules
Upper byte: Number of output double-word modules
Sets the expected packet rate at the slave station.
Setting = 0000
Setting ≠ 0000
The setting will vary depending on the connection type. Refer to Table 3.21 for
further details of the setting.
to 034F /340 to 847)
H H
After DN91 is turned ON, if the E
2
PROM are stored in the parameter area
0 to 63
→ Station that supports UCMM and uses the message group 3.
H
→ Station that supports UCMM and uses the message group 2.
02
H
→ Station that supports UCMM and uses the message group 1.
03
H
→ Station that does not support UCMM. (Dedicated server of
04
H
group 2)
→ Reserved station
80
H
= polling,
H
= bit strobe,
H
= change of state,
H
= cyclic
H
(default) → 200 ms
H
→ The value (setting - 1) is the communication watchdog timer
H
setting (ms).
−
3 23
MELSEC-A
2
PROM.
2
PROM contains valid
Contents
invalidates the parameters that
H
to 0003 .
H H