from
RS485 to RS232
LCS485 converts RS-232 signals to differential
transceiver, RS485, for communication on multipoint bus transmission
lines. It contains dual differential line drivers and dual differential
line
receiver, ideal for half-duplex, full duplex, data monitor and multipoint
applications. With +/-15kV ESD protection,
the LCS485 is ideal for long distance differential signal transmission.
Depending on the number of signal wires, it can operate under Four
Wire Full Duplex or Two Wire Half Duplex mode.
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Configurations |
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Point-to-Point
: Allows two devices to communicate with each other with differential
signals for long-distance applications. |
|
Multipoint
: Up to 32 devices can exchange information using the same signal
lines with one device as a Master under user-defined protocol. |
|
Simplex/Transmit,
Receive Only : Uses only two signal lines for
transmission, Similar to Multipoint with one talk-only Master
device and all other Devices are listen-only. |
|
Monitor
: Listens the signals going back and forth between two RS-422
or RS-485 equipment. |
|
Connector |
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| Point-to-Point |
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|
4-Wire, full Duplex configuration:
Two devices send and receive data using different pairs of lines |
|
2-Wire, half Duplex configuration:
Two devices transmit or receive data using the same pair of
lines controlled by RTS signals on both sides. |
| Multipoint |
|
|
4-Wire, full Duplex configuration:
One device (Master) sends and receives data;
up to 31 other devices (Slaves) receive data
all the time and send data only when RTS signal is active. |
|
2-Wire, half Duplex configuration:
One device (Master) sends data when its RTS
signal is active while up to 31 other devices (Slaves)
receive data. |
| Simplex/Transmit,
Receive Only |
|
|
Only one device (Master)
sends data while up to 31 other devices (Slaves,
S1, S2…. up to S31)
receive data. |
| Monitor |
|
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While two devices communicate with
each other using RS-485 transceivers, a third (monitoring) device
monitors the signals going back and forth via LCS485. Note:
The pin assignment for the terminal block and the RJ-11 Jack
varies for this mode. |
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