Maple Systems MAPware-7000 - Manual (Page 304)

304 MAPware-7000 Programming Manual
1010-1040, Rev. 02
Appendix B – System Tag Memory
The following table lists all of the internal memory of the HMC7000 which is reserved for
specific purposes.
S memory (System bits)
Tag
No. Tag
Name
Tag
Address
Type Access Models
Supported
Description
1 Carry bit S0000
Coil
(1 bit)
Read/
Write
HMC7000
Overflow indication in math
operations of ladder and
also used in rotate with
carry instruction.
2
High speed timer
control bit
S0001
Coil
(1 bit) Read/
write HMC7000 Enable bit to start high
speed timer
3
Minute Change
status
S0003
Coil
(1 bit) Read
only HMC7000 1 for every change in
minute for one scan cycle
4
Hour Change
status
S0004
Coil
(1 bit) Read
only HMC7000 1 for every change in hour
for one scan cycle
5
Date Change
status
S0005
Coil
(1 bit) Read
only HMC7000 1 for every change in date
for one scan cycle
6
Month Change
status
S0006
Coil
(1 bit) Read
only HMC7000 1 for every change in
month for one scan cycle
7
Year Change
status
S0007
Coil
(1 bit) Read
only HMC7000 1 for every change in year
for one scan cycle
8
Screen saver
Control
S0008
Coil
(1 bit)
Read/
Write HMC7035A-M
HMC7057A-M
0: Disable screen saver; 1:
Enable screen saver.
Runtime you can change
this bit
9 Beeper Control S0009
Coil
(1 bit)
Read/
Write HMC7035A-M
HMC7057A-M
1: Enable Beeper; 0: Disable
Beeper. Runtime you can
change this bit
10
RTC Battery
status
S0010
Coil
(1 bit)
Read
only
HMC7000 0: Battery voltage is OK (I.e.
above 2.2 V); 1: Low battery
(I.e. below 2.2 V)
11
Refresh historical
trend
S0012
Coil
(1 bit) Read/
Write HMC7035A-M
HMC7057A-M Refresh historical trend
window when set to 1
12
Acknowledge all
alarms
S0014
Coil
(1 bit)
Read
only
HMC7000 0: All alarms are
acknowledged; 1: All
alarms are not
acknowledged in the Real
and Historical alarms
13
Valid key beeper
Control
S0016
Coil
(1 bit)
Read/
Write HMC7035A-M
HMC7057A-M
1: Enable valid beeper; 0:
Disable valid beeper. Run
time you can change this bit