152
Analog Output Functions and Operating Procedures
Section 4-6
4-6-3
Output Hold Function
The Analog Output Unit stops conversion under the following circumstances
and outputs the value set by the output hold function.
1,2,3...
1.
When the Conversion Enable Bit is OFF. Refer to
Allocations for Normal
Mode
on page 147 and
4-6-2 Starting and Stopping Conversion
2.
In adjustment mode, when something other than the output number is out-
put during adjustment. Refer to
Allocation for Adjustment Mode
on
3.
When there is an output setting error. Refer to
Allocations for Normal Mode
on page 147 and
4.
When a fatal error occurs at the PLC.
5.
When there is an I/O bus error.
6.
When the CPU Unit is in LOAD OFF status.
7.
When there is a WDT (watchdog timer) error in the CPU Unit.
CLR, HOLD, or MAX can be selected for the output status when conversion is
stopped.
The above values may fluctuate if offset/gain adjustment has been applied.
To specify the output hold function, use a Programming Device to set the DM
Area words D(m+2) to D(m+9) as shown in the following table. (DM Area
words D(m+2) to D(m+5) for the CS1W-DA041.)
For the DM word addresses, m = (unit number x 100).
Output signal
range
CLR
HOLD
MAX
0 to 10 V
–0.5 V (Min. –5% of
full scale)
Voltage that was output
just prior to stop.
10.5 V (Max. +5% of
full scale)
–10 to 10 V
0.0 V
Voltage that was output
just prior to stop.
11.0 V (Max. +5% of
full scale)
1 to 5 V
0.8 V (Min. –5% of
full scale)
Voltage that was output
just prior to stop.
5.2 V (Max. +5% of
full scale)
0 to 5 V
–0.25 V (Min. –5%
of full scale)
Voltage that was output
just prior to stop.
5.25 V (Max. +5% of
full scale)
4 to 20 mA
3.2 mA (Min. –5% of
full scale)
Current that was output
just prior to stop.
20.8 mA (Max. +5%
of full scale)
DM word
Function
Set value
D(m+2)
Output 1: Output status when conversion is
stopped
xx00:CLR
Output 0 or mini-
mum value of
range (–5%).
xx01:HOLD
Hold output value
prior to stop.
xx02: MAX
Output maximum
value of range
(105%).
Set any value in the left-
most bytes (xx).
D(m+3)
Output 2: Output status when conversion is
stopped
D(m+4)
Output 3: Output status when conversion is
stopped
D(m+5)
Output 4: Output status when conversion is
stopped
D(m+6)
Output 5: Output status when conversion is
stopped
D(m+7)
Output 6: Output status when conversion is
stopped
D(m+8)
Output 7: Output status when conversion is
stopped
D(m+9)
Output 8: Output status when conversion is
stopped
Summary of Contents for CJ1W-AD041-V1
Page 3: ...iv...
Page 5: ...vi...
Page 9: ...x TABLE OF CONTENTS...
Page 15: ...xvi...
Page 99: ...76 Handling Errors and Alarms Section 2 8...
Page 191: ...168 Handling Errors and Alarms Section 4 8...
Page 243: ...220 Handling Errors and Alarms Section 5 8...
Page 381: ...358 Handling Errors and Alarms Section 7 10...
Page 385: ...362 Dimensions Appendix A...
Page 395: ...372 Sample Programs Appendix B...
Page 396: ...373 Appendix C Data Memory Coding Sheets...
Page 417: ...394 Data Memory Coding Sheets Appendix C...
Page 425: ......
