5-14 Control Logic Date Code 20010731
SEL-352-1, -2 Instruction Manual
REMOTE CONTROL SWITCHES (RB1—RB16)
Remote control switches are operated via the serial communications port only (see Section 8:
Serial Port Communications and Commands).
Figure 5.5: Remote Control Switches Drive Remote Bits RB1 Through RB16
The outputs of the remote control switches in Figure 5.5 are Relay Word bits RBn (n = 1 to 16),
called remote bits. Use these remote bits in SEL
OGIC control equations.
Any given remote control switch can be put in one of the following three positions via the serial
port commands shown. Begin with the CON n (Control Remote Bit n) command, then specify:
SRB n (Set Remote Bit n) ON (logical 1)
CRB n (Clear Remote Bit n) OFF (logical 0)
PRB n (Pulse Remote Bit n) MOMENTARY (logical 1 for an eighth cycle)
Remote Bit Application
With SEL
OGIC control equations, the remote bits can be used in applications where you want
certain logic to be remotely enabled or disabled, depending on operating conditions of the
system. Also, remote bits can be used in operating latches within SEL
OGIC control equations.
Pulse (momentarily operate) the remote bits for this application. Latches are discussed later in
this section.
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