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int rn_RelayAll(int handle, int control,
int reserved);
Sets the state of all the relays with the given bitwise control value. Connects the relay common contact to
either the relay normally closed contact or to the relay normally open contact.
PARAMETERS
handle is an address index to device information. Use rn_device() or rn_find() to estab-
lish the handle.
control establishes the bitwise control of Relays 0–5. The bit positions 0–5 correspond directly to
Relays 0–5, with the bit value controlling the relay as follows:
0 = common connected to normally closed contact
1 = common connected to normally open contact
reserved is reserved for future use. Set to 0.
RETURN VALUE
The status byte from the previous command. -1 means that device information indicates the Relay Card
is not connected to the master.
SEE ALSO
rnRelayPwr, rnRelay
EXAMPLE
rn_RelayAll(handle, 0x05, 0);
// Sets the relays to have the
Relay0...Common connected
Relay1...Common connected
Relay2...Common connected
Relay3...Common connected
Relay4...Common connected
Relay5...Common connected
following connections:
to Normally Open contact
to Normally Closed contact
to Normally Open contact
to Normally Closed contact
to Normally Closed contact
to Normally-Closed contact
User ’s Manual
113
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