HORNER HEXT251C216 - Useful %S and %SR Registers

MAN0964-13-EN_XL4_UM
A u g u s t 6 , 2 0 2 1 P a g e 50 | 194
%QG Global Digital Output
Specially defined single-bit outputs that go to the network.
%R General Purpose Register
Retentive 16-bit registers.
%S System Bit
Single-bit bit coils predefined for system use.
%SR System Register
16-bit registers predefined for system use.
%T Temporary Bit
Non-retentive single-bit registers.
6.2 Useful %S and %SR Registers
Table 6.1 – Common %S Register Definitions
Register
Name
Description
%S1
FST_SCN
Indicate First Scan
%S2
NET_OK
Network is OK
%S3
T_10MS
10mS timebase
%S4
T_100MS
100mS timebase
%S5
T_1SEC
1 second timebase
%S6
IO_OK
I/O is OK
%S7
ALW_ON
Always ON
%S8
ALW_OFF
Always OFF
%S9
PAUSING_SCN
Pause 'n Load soon
%S10
RESUMED_SCN
Pause 'n load done
%S11
FORCE
I/O being forced
%S12
FORCE_EN
Forcing is enabled
%S13
NET_IO_OK
Network I/O is OK