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Use the following procedure to the UM data on an Memory Cassette to the UM
data in the PC.
1, 2, 3... 1. Switch the C200HX/HG/HE to PROGRAM mode.
2. Use a host computer running SSS or a Programming Console to turn ON
SR 27002 (the Compare UM to Cassette Bit). The data will be compared be-
tween the PC and the Memory Cassette. SR 27002 will be turned OFF auto-
matically after the data comparison has been completed.
3. Use a host computer running SSS or a Programming Console to check the
status of SR 27003 (the Comparison Results Flag).
Note If data verification is executed in a mode other than the PROGRAM mode, an
operation continuance error (FAL90) will occur and 27002 will turn ON (1). Al-
though 27003 will also turn ON, comparison will not be performed. If data com-
parison is executed without mounting the Memory Cassette, 27003 will turn ON
(1).
2-4-3 Writing/Reading IOM Data
Use the following procedures to transfer IOM data to or from a Memory Cas-
sette. (A PROM writer is required to write data to an EPROM Memory Cassette.
Refer to the SYSMAC Support Software Operation Manual for details.)
IOM includes the IR area, SR area, LR area, HR area, AR area, timer and count-
er PVs, DM 0000 through DM 6143, and EM 0000 through EM 6143.
The capacity of the Memory Cassette must match the memory capacity of the
CPU Unit when IOM data is transferred to or from a Memory Cassette. The
memory requirements are as follows:
Writing IOM: CPU Unit’s capacity ≤ Memory Cassette’s capacity
Reading IOM: CPU Unit’s capacity = Amount of IOM data in Memory Cas-
sette
Note In C200HS PCs, the data transfer will be performed even if the memory capaci-
ties don’t match, an error which can easily go unnoticed.
The following table shows the Memory Cassette capacity required to store 1 or
more banks of EM.
Memory Cassette capacity Number of EM banks
4K words None (A 4K-word Memory Cassette can’t be used to
store other IOM data, either.)
8K words None
16K words 1 bank (Only EM bank 0 can be stored.)
32K words 3 banks (EM banks 0 through 2 can be stored.)
Bits 08 through 15 of SR 273 indicate the EM bank number of the IOM data
stored in the Memory Cassette.
Content of
SR 27308 to SR 27315
Meaning
00 There is no Memory Cassette installed, no IOM data in
the Memory Cassette, or no EM data in the Memory Cas-
sette.
01 The Memory Cassette contains IOM data that includes
EM bank 0 only.
04 The Memory Cassette contains IOM data that includes
EM banks 0 through 2.
Use the following procedure to write IOM data to an EEPROM Memory Cas-
sette.
1, 2, 3... 1. Before turning ON the C200HX/HG/HE’s power supply, make sure that
switch 1 on the Memory Cassette is set to OFF.
Comparing UM Data on a
Memory Cassette
Writing IOM Data to a
Memory Cassette
Memory Cassettes Section 2-4