↔
Protection signal transmission path
USB
Local interface
SSB
Remote monitoring interface
RM
Inband RM-Channel
RM signaling can only be transmitted at 50 Bd via the analog interface. In this case, the guard tone frequency
is used for transmitting the RM data.
Therefore you must observe the following points:
•
RM only works when the guard tone is transmitted.
•
Every command tone interrupts the RM transmission.
•
RM operation is not possible with continuous signaling.
•
Maximum number of addressable stations is 249
RM with Digital Interface
RM signals can be transmitted via digital line interfaces LID-1 and LID-2 at 50 Bd or 300 Bd.
RM signaling is at 300 Bd with all digital operations. In mixed analog/digital operation, transmission is at 50
Bd.
Service Channel
The Service Channel (SC) is a transparent data transmission channel with the format 9600 bps, 8 data bits, 1
start bit, 1 stop bit, and no parity. The data transmission channel is only available when using a digital line
interface (LID-1 and LID-2). It is available to the user as an asynchronous serial RS232 interface. The SC is elec-
trically connected via the PU4 line connector. Transmission is always carried out via the active digital line inter-
face.
IP Interface to SWT 3000
The SWT 3000 takes advantage of the latest technology to simplify operation and improve reliability. Using
standard TCP/IP network protocols, administrators can easily access each SWT 3000 device from anywhere via
the intranet. The system can interface with your own network security system and firewall providing you with
the exact level of security your company requires.
With easy authorized access to the SWT 3000 from almost anywhere, users can now:
•
Perform remote maintenance operations
•
Read the event recorder from any location
•
Monitor the network in real time with SNMP
2.10.2
2.10.3
2.10.4
Functional Description
2.10 Remote Monitoring, Service Channel, and IP Network
68
Smart Communication, SWT 3000 Teleprotection, Equipment Manual
C53000-G6040-C605-1, Edition 03.2020
