Technical data

Table Of Contents
System Status Lists (SSL)
System Software for S7-300/400 System and Standard Functions - Volume 2/2
A5E00739858-01
33-37
Contents Length Meaning
Mwstat2 1 byte Status byte 2
Bit 0: Status of the synchronization link-up 01:
Synchronization between CPU 0 and CPU 1
=0: not possible
=1: possible
Bit 1: 0
Bit 2: 0
Bit 3: reserved
Bit 4: =0: CPU not inserted in rack 0
=1: CPU inserted in rack 0
(in redundant mode: bit 4 = 0)
Bit 5: =0: CPU not inserted in rack 1
=1: CPU inserted in rack 1
(in redundant mode: bit 5 = 0)
Bit 6: reserved
Bit 7: Standby-master switchover since last
Re-enable
=0: no
=1: yes
Hsfcinfo 2 bytes Info word for SFC 90 "H_CTRL"
Bit 0: =0: Re-enable inactive
=1: Re-enable active
Bit 1: =0: Updating of standby enabled
=1: Updating of standby disabled
Bit 2: =0: Link-up to standby enabled
=1: Link-up to standby disabled
Bit 3: reserved
Bit 4: reserved
Bit 5: reserved
Bit 6: reserved
Bit 7: reserved
Bit 8: reserved
Samfehl 2 bytes Reserved
Bz_cpu_0 2 bytes Mode of CPU in rack 0
W#16#0001: STOP (update)
W#16#0002: STOP (reset memory)
W#16#0003: STOP (self-initialization)
W#16#0004: STOP (internal)
W#16#0005: STARTUP (cold restart)
W#16#0006: STARTUP (warm restart)
W#16#0007: STARTUP (hot restart)
W#16#0008: RUN (solo mode)
W#16#0009: RUN-R (redundant mode)
W#16#000A: HOLD
W#16#000B: LINK-UP
W#16#000C: UPDATE
W#16#000D: DEFECTIVE
W#16#000E: SELFTEST
W#16#000F: NO POWER
Bz_cpu_1 2 bytes Mode of CPU in rack 1
(values as for bz_cpu_0)
Bz_cpu_2 2 bytes Reserved
Cpu_valid 1 byte Validity of the variables bz_cpu_0 and bz_cpu_1
B#16#01: bz_cpu_0 valid
B#16#02: bz_cpu_1 valid
B#16#03: bz_cpu_0 and bz_cpu_1 valid