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Analog Outputs Section 7-10
7-10-3 Analog Output Function Specifications
Analog Outputs
Item Specification
Output signals Voltage outputs
Number of analog outputs 2 outputs
Output ranges Select each output’s signal range in the System Setup (Analog Input/Output Tab Page,
Output 1 Setting and Output 2 Setting):
–10 to 10 V, 0 to 10 V, 0 to 5 V, or 1 to 5 V
D/A conversion time 40 µs/output
Resolution –10 to 10 V: 1/10,000 (14-bit value between EC78 and 1388 hex)
0 to 10 V, 0 to 5 V, or 1 to 5 V: 1/4,000 (12-bit value between 0000 and 0FA0 hex)
Analog output refresh method Set the refresh timing of analog output values in the System Setup (Analog Input/Out-
put Tab Page − Output):
• END refresh
• Immediate refresh (executing SPED(885) or ACC(888))
END refreshing The values in A560 and A561 are output as the analog output 1 and
2 output values.
Immediate
refreshing by
instructions
The specified analog value is output when SPED(885) or ACC(888)
is executed in the program.
• SPED(885): Changes analog output value in a step pattern.
• ACC(888): Changes analog output value with a slope. (Value
changes every 2 ms.)
Note
1. Analog output values can also be controlled from interrupt subrou-
tines.
2. The setting in the analog output stop function determines the an-
alog output value from startup until execution of an instruction that
controls the analog output.
Analog output values • With END refreshing, the analog output values are specified in A560 and A561.
• With immediate refreshing by instructions, the analog output values are specified in
the instruction’s operands.
–10 to 10 V
EC78 to 1388 hex (–5,000 to 5,000 decimal) (resolution: 10,000) corresponding
to 0% to 100% voltage (–10 to 10 V)
The possible setting range is actually EA84 to 157C hex (–5,500 to 5,500 deci-
mal) corresponding to –5% to 105% voltage (–11 to 11 V)
0 to 10 V, 0 to 5 V, or 1 to 5 V:
0000 to 0FA0 hex (0 to 4,000 decimal) (resolution: 4,000) corresponding to 0% to
100% of the FS range. (Actually, the setting range is FF38 to 1068 (–200 to 4,200
decimal) corresponding to –5% to 105% voltage (–0.5 to 10.5 V, –0.25 to 5.25 V,
or 0.8 to 5.2 V).)
Analog output value storage
locations
Analog output 1: A560; Analog output 2: A561
• With END refreshing, the contents of these words can be changed to change the ana-
log output values that are output externally.
(The actual output value may be different from the stored value if the output stop func-
tion is being used to clear the output or output the maximum value.)
• With immediate refreshing by instructions, the value being output by SPED(885) or
ACC(888) is stored in these words for monitoring when SPED(885) or ACC(888) is
executed. If the hold function is being used, the values output by the hold function are
stored for monitoring.
Max. external output current 2.4 mA
Overall accu-
racy (See note
1.)
23 ±2°C ±0.3% of FS
0 to 55°C ±0.5% of FS