Rockwell Automation T8017 Trusted Peer to Peer Communications - Manual (Page 22)

Trusted
TM
Communication Software Package T8017
Issue 10 Mar 08 PD-T8017 22
2.2.3. Analogue Output Boards
Figure 11 shows the display associated with an IEC1131 Toolset 16 channel analogue output board
selected for outgoing data to a Trusted
TM controller.
Figure 11 Peer to Peer Analogue Output Board Display
The user must enter data as detailed below:
NETWORK_ID – The network that is carrying the data. Data will be received via all peer controllers
that share this network identity. Range 1 – 8.
TARGET_PEER_ID - The peer that is receiving the data, or the multicast ‘peer’. Range 1 – 40.
SOURCE_DATA_ID - Unique data block number to allow input boards to distinguish the data.
Range 1-64.
REFRESH_INTERVAL - The maximum number of milliseconds allowed between successive
transmissions of the output data. Note that data will be sent immediately following any change of
output state. If a value of zero is specified in this field then data will be refreshed every application
scan regardless of output state change. Range 0-10000.
DELTA - Minimum change in any output variable required before update is sent to Peer, not
withstanding refresh interval. When applied to integers, fractional part is truncated. Range 0 to
9.999999e+038.
Analogue variable outputs 1 to 16 – 32 bit integer or real analogue outputs. Note that no
conversion will be applied when transferring real or integer data and therefore it is required that
each input data variable matches its respective output variable type.
The 128 output peer board supports 128 analogue outputs instead of 16 but is otherwise identical.
Note that safety related data using 128 analogue channel blocks must be sent via two different
input/output block pairs and compared at the receiving input end in the application to ensure safety
integrity. Alternatively it may be broken into 16 channel blocks.