18
1MRS755014
Profibus-DPV1/SPA Gateway
Installation and Commissioning
SPA-ZC 302
3.3.2.3. Profibus DP communication speeds
The communication speed is automatically detected by the gateway when it is
connected to the Profibus.
3.3.3. SPA bus/configuration interface
The gateway is provided with a 9-pin D-connector. The interface types are RS-232,
RS-485 or TTL. The DIP switches located on the connector board beside the
D-connector are used to set signal types and supply voltage.
3.3.3.1. Communication settings
The SPA settings are 7 data bits, 1 stop bit and even parity. The SPA interface
settings shall be the same regardless if RS-485, RS-232 or TTL level is used.
Table 3.3.2.3-1 Communication speeds
Baud rates supported
9.6 kbit/s
19.2 kbit/s
45.45 kbit/s
93.75 kbit/s
187.5 kbit/s
500 kbit/s
1.5 Mbit/s
3 Mbit/s
6 Mbit/s
12 Mbit/s
Table 3.3.3-1 SPA bus connector
Pin Usage
Housing Shield connected to power earth
1 RS-485 A-line, Negative RxD/TxD
2 RS-485 B-line, Positive RxD/TxD / RS-232C TxD / TTL RxD
3 RS-485 RTS A (-) / RS-232C RxD / TTL TxD
4 RS-485 RTS B (+)
5 Signal ground
6 Not connected
7 Signal ground
8 +5 V supply voltage source
9 +8 V supply voltage source
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