Horner-apg RCS SmartStix Manual de usuario descargar pdf (Pagina 13)

CH.1 15 MAR 2003 PAGE 13

MAN0305-04

1.3.2 Resource Definitions

This section defines the resources listed in Table 1.2.

System Registers

System Registers (%S and %SR) are used to store general OCS or RCS status information. This

information is used internally, and is also available to the operator via the System Menu, using the Control

Station’s display and keypad. The System Registers are also available for User Screens and can be

accessed by Ladder Code.

a. %S Registers

%S Registers are 1-bit memory locations, containing system status information, implemented as shown in

Table 1.3:

Table 1.3 - %S Registers

%S1 FST_SCN On during first scan after entering RUN mode

%S2 NET_OK On if Network is functioning properly

%S3 T_10MS On for 5 mS; Off for 5 mS

%S4 T_100MS On for 50 mS; Off for 50 mS

%S5 T_SEC On for 500 mS; Off for 500 mS

%S6 IO_OK On if SmartStack I/O is configured properly

%S7 ALW_ON Always On

%S8 ALW_OFF Always Off

b. %SR Registers

%SR Registers are 16-bit memory locations, containing system status information, implemented as

shown in Table 3. Note: Where 2 %SRs are combined to make a 32-bit value, the lower numbered %SR

is the low word, while the higher numbered %SR is the high word.

Table 1.4 - %SR Registers

%SR1 USER_SCR Current User Screen Number (0=none) 0 200

%SR2 ALRM_SCR Current Alarm Screen Number (0=none) 0 200

%SR3 SYS_SCR Current System Screen Number (0=none) 0 11

%SR4 SELF_TEST Bit-Mapped Self-Test Result 0 65535

%SR5 CS_MODE

Control Station Mode

(0=Idle, 1=Do I/O, 2=Run)

0 2

%SR6 SCAN_RATE Average Scan Rate (in tenths of mS) - 1000

%SR7 MIN_RATE Minimum Scan Rate (in tenths of mS) - 1000

%SR8 MAX_RATE Maximum Scan Rate (in tenths of mS) - 1000

%SR9-10 EDIT_BUF Data Field Edit Buffer 0 2

-1

%SR11-12 LADDER_SIZE Ladder Code Size 2 64K

%SR13-14 UTXT_SIZE User Text Screen Table Size 4 64K

%SR15-16 Reserved - - -

%SR17-18 IO_SIZE I/O Configuration Table Size 16 64K

%SR19-20 NET_SIZE Network Configuration Table Size 34 32K

%SR21-22 SD_SIZE Security Data Table Size - -

%SR23 LADDER_CRC Ladder Code CRC 0 65535

%SR24 UTXT_CRC User Text Screen Table CRC 0 65535

%SR25 Reserved - - -

%SR26 IO_CRC I/O Configuration Table CRC 0 65535

%SR27 NET_CRC Network Configuration Table CRC 0 65535

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 63 64

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