5-3
Section
Reading Data with the READ DATA Bit
104
READ DATA Procedure
1, 2, 3...
1. Setting common parameters: Refer to
4-2 Common Parameters
.
m:
Set the operating data area either to DM or to EM.
m+1:
Set the operating data area beginning word (l).
m+2:
Designate mounting position and parameters.
2. Powering up again or restarting
The data for the common parameters set in 1 above will be enabled.
3. Setting operating data area
I+3:
Total number of words to be read from the PCU (4 digits BCD)
I+4:
Beginning address of PCU’s data area (4 digits BCD).
I+5:
Beginning word address (4 digits BCD) of PC’s DM or EM area
where read data will be stored.
4. Execute READ DATA.
Turn the READ DATA Bit (word n+1, bit 13) from OFF to ON.
The operations in (1) and (2) above are required when using the Position Control
Unit for the first time or when modifying the data in the common parameter area.
5-3-2 Timing Chart for Reading Data
Reading data is possible even during axis operation.
It is not possible to write and read data at the same time.
The following diagram is a timing chart for reading data.
Number of transfer
words (I+3)
Transfer source
address (I+4)
Transfer destination
word (I+5)
READ DATA
(n+1, bit 13)
Data transferring
(n+8, bit 14)
After the data reading operation has been completed, the Data Transferring Bit
(word n+8, bit 14) is turned from ON to OFF. If an error occurs during data trans-
fer, the Error Flag (word n+8, bit 12) will be turned ON and the error code will be
output to I+27 in the operating data area. Check this error code to determine the
cause of the error and correct it.
Summary of Contents for C200HW
Page 1: ...Cat No W334 E1 04 Position Control Units SYSMAC C200HW NC113 NC213 NC413 ...
Page 2: ...C200HW NC113 NC213 NC413 Position Control Units Operation Manual Revised July 2003 ...
Page 3: ...iv ...
Page 5: ...vi ...
Page 285: ...Cat No W334 E1 04 C200HW NC113 NC213 NC413 Position Control Units OPERATION MANUAL ...
