Cocoon POWERTALK 101 - Manual (Page 48)

PowerTALK 101
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Technical detail
Settings for popular Siemens & GE Multilin equipment
The serial settings for Siemens DIGSI 7SJ600 protection relays are: 11 bit, 9600 8E1
The serial settings for GE Multilin 239 protection relays are: 10 bit, 9600 8N1
Channels
The concept of channels was introduced to facilitate the selective connection of various
PowerTALK units, connected to the same Ethernet network.
A channel has all the necessary intelligence to facilitate full duplex connections between any of its
members. Important to note, that all ports will reflect all data flowing in all directions. To make
such a connection useful, the user’s protocol must accommodate multi-drop connections.
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Each serial port on each PowerTALK unit is connected to a specified channel.
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All incoming serial data will be made visible on the specified channel, on Ethernet.
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All PowerTALK units will listen for packets on the Ethernet, bearing the specified channel
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If a PowerTALK unit sees a packet destined for any of its serial ports, the packet gets
disassembled, and the serial data contained within is output into the relevant port
All PowerTALK 101 units are factory set as follows: all Ports 1 on all PowerTALK units are
connected to channel 1, and also all ports 2 onto channel 2. All connections are one-to-many, i.e.
a multi drop arrangement.
Channel 1 Channel 2 Channel 3 Channel 4
PowerTALK “A” Serial 1 Serial 2
PowerTALK “B” Serial 1 Serial 2
PowerTALK “C” Serial 1 Serial 2
PowerTALK “D” Serial 1 Serial 2
For one-to-one connections, i.e. classical RS-232 usage, a channel may only have 2 ports
defined. In the table below, 4 channels are defined for four logical links between four PowerTALK
101 units.
Channel 1 Channel 2 Channel 3 Channel 4
PowerTALK “A” Serial 1 Serial 2
PowerTALK “B” Serial 1 Serial 2
PowerTALK “C” Serial 1 Serial 2
PowerTALK “D” Serial 1 Serial 2