Single char ack c1 or c2, Maximum asdu resp len, Cause of trans(mission) octets – ProSoft Technology 5201-MNET-101S User Manual
Page 27: Freeze start type
IEC-101 Slave ♦ ProLinx Communication Gateway
101S Protocol Configuration
IEC 60870-5-101 v3 Slave (Firmware version 3.xx)
Protocol Manual
ProSoft Technology, Inc.
Page 27 of 159
August 6, 2010
2.1.14 Single char ACK C1 or C2
Y
-Y
ES
or
N
-
N
O
If set to Yes, a single character ACK (0xE5) will be sent instead of a fixed length
NACK (secondary function code 9) when no response user data is available. If
set to No, the fixed length NACK will be sent.
2.1.15 Maximum ASDU Resp Len
25 to 252
Sets the maximum ASDU response message length (usually 252).
2.1.16 Cause of Trans(mission) Octets
1 or 2
Specifies the number of COT octets (1 or 2)
2.1.17 Freeze Start Type
D
=
D
AY
,
H
=
H
OUR
,
M
=
M
INUTE
,
N
=
N
OT USED
The Freeze Start Type parameter defines when the gateway starts sending the
M_IT messages.