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Transmission mode
● TeleControl Basic, ST7, IEC
The parameter serves to specify whether the values of a data point that is configured as
an event are buffered until the next transfer or sent spontaneously (immediately) to the
partner.
The following options are available:
– Spontaneous
– Buffered / conditional spontaneous
If the communication of the RTU on the page "Operating mode > Operating modes" is
configured with "Always" the values are buffered and transferred in the next
communication cycle.
With data points with the Type of transmission "Transfer after call" (TeleControl Basic /
ST7) or "Static" (IEC) the boxes are grayed out because these values must not be sent
spontaneously.
● DNP3
With the DNP3 protocol a spontaneous transfer is configured by entering 0 (zero) on the
"DNP3" page for the parameter "Send buffer", see section DNP3 (Page 175).
Values of data points of class 0 are never sent spontaneously.
Signal types, data types and data point types of the RTU
Table 4- 7
Signal types, data types, data point types
Signal type
Data type (bit)
Digital input
Bool (1)
Digital input
Byte (8)
Digital output
Bool (1)
RTU3030C
Operating Instructions, 09/2017, C79000-G8976-C382-04
The values are transferred immediately. With cyclic communication if the condition is
met, there is a direct change to the communication mode.
The values are buffered and transferred to the partner only in the next communication
cycle.
TeleControl
Basic
Digital input
1 Bit
Digital output
1 Bit
Supported data point types
ST7
(Data points per
Object group [varia-
object)
Binary Input 1 [1, 2]
Binary Input Event 2
[1, 2, 3]
Cmd01B_S
(1 x 8 Commands)
Bin04B_S
(4 x 1 Byte)
Bin08X_S (8 x 1 Bit)
Binary Output 10 [1,
2]
Binary Output Event
11 [1, 2]
Binary Command 12
[1, 2, 3]
Configuration (WBM)
4.20 Telecontrol
DNP3
IEC
<type identifica-
tion] *
tion>
M_SP_TB_1
<30>
C_SC_NA_1
<45>
189
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