Memory Map - Omron SYSMAC C Series Operation Manual

Data Exchange with CPU Unit

9-3-3 Memory Map

Data Decimal
format f notation i
Sign
BCD –7999
–2048
–1
0
2047
4095
7999
Binary y
–32767
–2048
–1
0
2047
4095
32767
Control Bits and Flags
The Analog Output Unit has a 62-word RAM which contains 16-bit data, 1-bit
control bits, and 1-bit flags.
RAM contains data in BCD or binary format. Use the BCD/Binary Mode Bit to
specify the data format (BCD or binary) for each output point. By default, all out-
put points are set to BCD format. All data for each point will be in the same format
(BCD or binary).
The sign (signed/unsigned)and range of data in BCD or binary format depend on
the data format in RAM, as shown in the following table.
Format in RAM
Conversion data, upper and lower limits
0 to 10 V
0 to 5 V
0 to 20 mA
4 to 20 mA
Unsigned
F999 (see note) Not possible.
A048 (see note) Not possible.
8001 (see note) Not possible.
0000 OK
2047 OK
4095 OK
7999 Not possible.
8001 Not possible.
F800 Not possible.
FFFF Not possible.
0000 OK
07FF OK
0FFF OK
7FFF Not possible.
Note Bit 15 is the sign bit.
In addition to data, RAM contains control bits and flags.
Control Set in the CPU Unit to execute a specific function.
bits
Flag Set by the Analog Output Unit to notify the CPU Unit of status.
OFF: Disabled or OFF
ON: Enabled or ON
Both control bits and flags are arranged in the following format. Bits 0 to 7 and 8
to 15 correspond to output points 1 to 8.
Bit number 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Output 8 7
Data format
Without scaling
–5 to 5 V
–10 to 10 V
Signed
Not possible.
OK
OK
OK
OK
Not possible.
Not possible.
Not possible.
Not possible.
OK
OK
OK
Not possible.
Not possible.
6 5 4 3 2 1
Section
Output ramp
set time
With scaling
Signed Unsigned
OK Not possible.
OK Not possible.
OK Not possible.
OK OK
OK OK
OK OK
OK OK
OK Not possible.
OK Not possible.
OK Not possible.
OK OK
OK OK
OK OK
OK OK
8 7 6 5 4 3
9-3
2 1
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