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10:13:54 [SECS-II: Rcv]
S2, F23, Device ID = 1, WBit = 1, SystemByte = 00000014
L, 5
U2, 1, <3>
ASCII, 6, <000001>
U4, 1, <10>
U2, 1, <1>
L, 1
U2, 1, <1001>
10: 13: 54 [I / F: Alarm] GetU2Item (280, ...); -13012
10: 13: 54 [I / F: Alarm] GetU2Item (280, ...); -13012
10: 13: 54 [I / F: Alarm] GetListItem (280, ...); -13012
10: 13: 54 [SECS-II: Send]
S2, F24 [Trace Initialize Acknowledge (TIA)], Device ID = 1, WBit = 0, SystemByte = 00000014
BIN, 1 , [TIAACK] <00>
10: 13: 57 [SECS-II: Send]
S6, F1 [Trace Data Send (TDS)], Device ID = 1, WBit = 1, SystemByte = 00004445
L, 4
U2, 1, <3>
U2, 1, <3>
ASCII, 16, <2009040110135700>
L, 0

This error occurs when using the GetxxxItem () function which does not match the format of the received message when parsing a received message with the GetxxxItem () function.