Schweitzer Engineering Laboratories SEL-2020 - Port F Status Register; Remote Bit Control Register; Local Data Region (LOCAL)

Date Code 20010518 Database 9-9
SEL-2020 Instruction Manual
Remote Bit Control Register
00000000000 00 000
└─────┬─────┘ └┬─┘ └─┬─┘
│││Bit Number
│││┌000=R8
││││001=R1
││││010=R2
││││011=R3
│ │ └──┤ 100=R4
│││101=R5
│││110=R6
││└111=R7
││
││ Operation
││┌01 = set
│ └────────┤ 10 = clear
│└11 = pulse
│
│ Time
│┌00000000001=1sec
││00000000011=3sec
└────────┤ .
│ .
└ .
example:
writing 0000000001111011 or 007Bh to register 0037h pulses remote
bit R3 for 3 seconds.
Port F Status Register
00000000 0 000 0 100
└───┬────┘ │ └─┬─┘ │ └─┬─┘
│ │ │ │ └───┬ Device Type
│ │││ └100 = Master Port
│ │││
│ │ │ └───────┬ 1 = Transparent Mode
│││ └0 = Not Transparent Mode
│││
│ │ └──────────── Unused
││
│ └───────────────┬ 1 = Modem Connected Remotely
│└0 = No Modem or Modem Disconnected
│
└─────────────────────── Unused
Local Data Region (LOCAL)
The Local Data Region contains information specific to the local port. This information includes
port status, local elements (intermediate logic, general command receipt, select-before-operate
flags), database status, select-before-operate registers, archive queue counters, device FID (for
auto-configured SEL IED ports), and port ID setting. (See Table 9.5, Table 9.6, and Table 9.7
for detailed information).
The Local Data Region also contains the most recent fault location and type. These registers are
only used if 20EVENT or 20EVENTQ is set as a user-defined command so that the SEL-2020 is
watching for unsolicited summary event reports. Once the fault location and type are updated,
the SEL-2020 will not update them again until 30 seconds elapse during which no unsolicited