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The basic principles to take into account...
a) The data rate of the Profibus segment must be defined according to the slowest equipment, which very often is the radio modem. So, if you are willing to use wireless communication and cables in the same site, you should have a dedicated segment for radios.
b) If the device is a touch panel or some other kind of control panel, there may occur some lack of communication capacity.
c) The interfacing can be done either by using the CRS-PB (YC0501) cable or by using the NARS-2 interface adapter, depending on the most practical approach for connecting the cables to the PLC.
1. Master-to-Slave, or Master-to-MultiSlaves
1a) Radio modem parameters
Model = SATELLINE-3AS-NMS
Channel spacing = 25 kHz
Com port 2 = RS-485, 9600-8-E-1
FEC = OFF
Firmware = 4.0.13
Other parameters as defaults.
Identical settings for all the modems in a system.
1b) Profibus parameters
HSA = equal to the real highest station address in the system
Data speed = 9600 bps
Tslot_Init = 1000
Max. Tsdr = 980
Min. Tsdr = 36
Tset = 1
Tqui = 0
Gap factor = 50
Retry Limit = 5
Ttr = 46001
Watchdog = 87837
2. Master-to-Repeater-to-Slave, or Master-to-Repeater-to-MultiSlaves
2a) Radio modem parameters
Model = SATELLINE-3AS-NMS
Channel spacing = 25 kHz
Com port 2 = RS-485, 9600-8-E-1
FEC = OFF
Firmware = 4.0.13
Radio modem addresses (examples):
Master
Tx addresses = 0001/0001
Rx addresses = 0004/0004
Repeater
Tx addresses = 0004/0002
Rx addresses = 0003/0001
Slave or Slaves
Tx addresses = 0003/0003
Rx addresses = 0002/0002
Other parameters as defaults.
2b) Profibus parameters
Tslot_Init = 2000
Max. Tsdr = 980
Min. Tsdr = 36
Tset = 255
Tqui = 20
Gap factor = 50
Retry Limit = 5
Ttr = 62612
Watchdog = 119508
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