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3 SPECIFICATIONS
3 SPECIFICATIONS
3.1 Performance Specifications
3
Programming language
Number of tasks
Task start conditions
Internal memory
General Input/Output
Memory protection
Interfaces
Communications method
Synchronization method
2
Transmission rate (
)
2
Data format (
)
Transmission control
Clock function
Power failure maintenance
User program ROM Storage
3 - 1
The following shows the performance specifications of the QD51 (-R24).
For general specifications, refer to the QCPU User's Manual (Hardware Design,
Maintenace and Inspection).
The performance specifications of the QD51 (-R24) are shown below.
Item
Program
Common memory
Buffer memory
Expansion relay (EM)
Expansion register (ED)
CH.1
CH.2
CH.3
Start bit
Data bits
Parity bit
Stop bit
DTR/DSR (ER/DR) control
RS/CS control
CD signal control
DC1/DC3 (Xon/Xoff control)
DC2/DC4 control
1 For details, refer to Section 5.6.2.
2 The transmission rate and data format are set using the BASIC program
(ZOPEN command).
For details, refer to the Programming Manual (Commands).
Specification
QD51
AD51H-BASIC (Interpreter, Compiler)
2
• Start by power is turned on.
• Start by an interrupt from the programmable controller CPU.
(Not possible when compiled BASIC is used.)
• Start by a start request from another task.
Max. 64 kbytes (Task 1 capacity + Task 2 capacity ≤ 64 kbytes)
8 kbytes
6 kbytes
1024 points
1024 points
Input: 26 points
Output: 23 points
Yes (Flash ROM write protectable) (
RS-232 compatible (D-sub 9p)
RS-232 compatible (D-sub 9p)
Full duplex communications
Start stop synchronization method
300, 600, 1200, 2400, 4800, 14,400, 19,200, 28,800, 38,400 (bps)
It is possible to use the 2 interfaces with a total transmission rate within
38,400 bps.
1
7 or 8
Even, Odd, None
1 or 2
RS-232 only can be used, RS-422/485 cannot be used.
None
Both RS-232 and RS422/485 can be used.
None
None
None
The program area only can be stored in Flash ROM.
MELSEC-Q
QD51-R24
1
)
RS-232 compatible (D-sub 9p)
RS-422/485 (Two-piece terminal
block)
(Continued to the next page)
3 - 1
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