Omron SYSMAC C200H-IDS01-V1 Operation Manual page 31

Word Settings
Read/Write Bit Areas
Error Storage Area
Error Messages and Reset
Flags
16
The following table shows the memory areas (bits) that the ID Sensor Unit
uses when reading data from or writing data to the Data Carrier.
DM area
IR area
HR area
AR area
LR area
TC area
If, during execution of Read or Auto Read, the data read from the Data Carrier
exceeds the capacity of the receiving area, a Read Format error occurs and
word n+4, bit 08 turns ON.
Example:
Data Carrier Read data: 40 bytes = 20 words
Beginning word number (receiving data): DM 1990
As the above table shows, the words specified in the DM area are DM 0000
through DM 1999. If the beginning word number is DM 1990, only 10 words
(DM 1990 through 1999) are available for receiving data. In this example, the
quantity of data to be read is too large for the available space in the DM area.
A Read Format error will occur and the data will not be written to the DM area.
To correct the error, change the beginning word number (receiving data) to a
word number less than DM 1980, or reduce the quantity of data in the Data
Carrier to fewer than 10 words.
The error information storage area of the ID Sensor Unit is undefined at ship-
ment. Before using the ID Sensor Unit, clear the newest error information and
statistical error information. (Refer to 3-2-9 Error Log Display (ERR) for
details).
The ID Sensor Unit's error messages and reset flags are located in the AR
area as "Special I/O Unit Error Message" and "Special I/O Unit Reset Flag".
Refer to the C200H Programmable Controller Operation Manual for details.
Special I/O Unit Error Message
Special I/O Unit Reset Flag
When the error message flag for a particular unit number is ON, the RUN LED
of the corresponding Special I/O Unit turns OFF.
Area Bits
DM 0000 through 1999
000 through 246
HR 00 through 99
AR 07 through 22
LR 00 through 63
TC 000 through 511
AR 0000 through AR 0009
AR 0100 through AR 0109
Section 2-2