Lenze DDS Target 9300 Servo PLC V8.x - Manual (Page 156)

9300 Servo PLC
Appendix
3−150
L
9300 Servo PLC EN 5.1
3.6.1 Temporary codes
Codes C2500 and C2501 are temporary codes, i.e. the data
·
does not occupy any EEPROM memory space.
·
cannot be saved in the parameter set of the unit using C0003 = 1.
·
will be lost after mains disconnection or power failure.
·
is fixedly linked with the PLC flag area.
·
Temporary codes should be used for parameters which are only accessed during a switch−on
cycle of the PLC.
·
The temporary codes can also be used to directly access the flag area of the PLC (e.g via
HMI) without having to create a variable.
3.6.2 RAM access via codes
If you want to access the RAM of the PLC from external control systems or PC tools, for instance to
manipulate motion profile data online, you can use the following codes:
RAM
block 1
RAM block selection
C0506
1
2
Offset
C0505
4 bytes
4 bytes
Offset
C0505
RAM
block 2
0
write
read 4 bytes C0507
4 bytes C0508
0
65535
65535
Write protection
C0504/1
Write protection
C0504/2
Fig. 3−1 Codes for RAM access