Siemens SIMATIC TIWAY 1 Especificaciones Pagina 61

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Communication
Settings
4–4
Communication Settings
There are two banks of switches located on the rear of the DCM that are used to set
the communications parameters.
Baud 1 2 3
300 ON OFF OFF
600 OFF ON OFF
1200 ON ON OFF
2400 OFF OFF ON
4800 ON OFF ON
9600 OFF ON ON
19200 ON ON ON
38400 OFF OFF OFF
Baud Rate
ODD Parity
Switch Positions
Self Test
NO Parity
Set to OFF
Time* 6 7 8
0 OFF OFF OFF
2 ON OFF OFF
5 OFF ON OFF
10 ON ON OFF
20 OFF OFF ON
50 ON OFF ON
100 OFF ON ON
500 ON ON ON
*Delay time in milliseconds
Switch Positions
OFF ON
SW 4
SW 5
Station
Type
Station Type 1 2
DirectNET Slave OFF OFF
DirectNET Master OFF ON
DirectNET Peer ON OFF
Modbus) RTU Slave ON ON
COM Timeout Disable
ASCII Mode
COM Timeout Enable
Hexadecimal Mode
1
2
3
4
5
6
7
8
1
2
3
4
Switch Positions
Delay Time
Baud Rate: Positions 1 3 on SW4 are used to set the baud rate for the DCM. There
are eight baud rate selections available from 300 baud to 38.4K baud.
Parity: Position 4 on SW4 selects between the two parity options, odd or none.
Self-Test: Position 5 on SW4 selects the factory self-test and should always be
switched off. If the self-test is on, the module will not operate correctly.
Response Delay Time: Positions 6 8 on SW4 set the response delay time. This is
primarily used when youre using modems and determines how long the DCM will
wait before it responds to a communication request. If youre using all
DirectLOGIC equipment, a response delay is not required and you should set the
time to 0. If youre using a modem, check the documentation to determine the proper
delay time.
Station Type: Positions 1 and 2 on SW5 select the DCM protocol and the station
type, master or slave. The DCM is very versatile and can actually support a second
protocol ModbusR. Be sure you have selected the proper protocol for your network,
either DirectNET or ModbusR.
Host as Master: If youre using a host as master, set the DCM as a DirectNET slave.
PLC as Master: If the DCM is in a master station, then set the DCM as a DirectNET
master. If the DCM is in a slave station, then set the DCM as a DirectNET slave.
Peer as Master: If youre using a peer network, set both stations as DirectNET
peers.
Communication Timeout: Position 3 on SW5 selects the communication timeout.
Don’t disable the timeout for normal use. Communication Timeout Disable is
normally used only if youre developing your own DirectNET programs. By disabling
the timeout, you can send one DirectNET component without any communication
problems. If you have this timeout disabled and a communication error does occur,
you must restart communications by sending a retry or an End of Transmission
(EOT) command.
ASCII / HEX Mode: Position 4 on SW5 selects between ASCII and HEX modes of
data representation. Set the switch to match your network parameters.
DL405 DCM
Communication
Switches
DCM Rear View
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