YOKOGAWA F3LC11-1F, User Manual

Page: 67 / 202

A3-9
IM 34M6H41-02E 2nd Edition : Aug. 1, 2005-00
Beeper Connection Time
Sometimes, message transmission to the beeper may be unsuccessful due to the time
required to connect to the beeper base station and complete message transmission
(when the line is disconnected before message transmission completes).
In such cases, you should adjust data position number 40/90 (Beeper Connection Time).
Check the time required from the start of the dialing to connecting to the base station
until the guidance finishes, add 2 to 3 seconds to the value and store it in data position
number 40/90. The default value is 30 seconds.
CAUTION
- The number of data transmitted must be less than the number of digits that can be
accepted by the beeper.
- Output relays Ylmm37 (Specify Header/Footer) and Ylmm38 (ASCII Conversion)
are not relevant to message transmission and should be always off.
Operation of Message Transmission (for F3LC11-1F)
This function is used with public line connection.
(1)
To transmit a message to a beeper, follow these steps.
1. Perform a line connection using the auto-dial function.
2. If the line connection is successful, transmit the message.
3. When transmission completes, disconnect the line.
(2) To transmit a message to a beeper, besides the relays and registers for the auto-
dial function, you must also set the following relays and registers in advance.
Data position number 101-132 Write using the WRITE instruction.
Output relay Ylmm39 Always on.
(3)
Perform a line connection in the same way as described in section 3.1 “Auto-Dial
Function”.
When the line is connected and input relay Xlmm05 (Connected) turns on, turn on
output relay Ylmm34 (Request to Send) using the SET P instruction on the rising
edge.
When transmission completes, input relay Xlmm02 (Transmit Completed) turns on.
Turn off output relay Ylmm34 (Request to Send) on the rising edge of input relay
Xlmm02 (Transmit Completed) using the RST P instruction.
Turning off output relay Ylmm34 (Request to Send) also turns off input relay
Xlmm02 (Transmit Completed).
After transmission completes, disconnect the line in the same way as described in
the section on Auto-Dial Function.
However, note the following when disconnecting the line.
When the number of data being transmitted is large, even if input relay Xlmm02
(Transmit Completed) turns on, there may still be data being transmitted on the
line. Turning on output relay Ylmm43 (Disconnect Line) when input relay Xlmm02
(Transmit Completed) is on may cause the message transmission to the beeper to
fail.