Display elements (LEDs), 15, 95
E
EN/ENO Mechanism, 88
End criterion, 24, 26
End-of-text character, 27
Expiration of the character delay time, 26
Fixed message frame length, 29
End-of-text character, 24, 59
Error messages of the display elements, 96
Event class, 97
Event Class 30, 103
errors in communication between the CP and the
CPU, 103
Event number, 97
EXTF, 96
F
FAULT, 96
FB 10, 74
FB 11, 74
FB 9, 74
FB RES_RECV
Assignment in the Data Area, 84
Deleting the receive buer, 82
Error display, 83
Parameters, 84
Time sequence chart, 85
Fixed message frame length, 24, 29
Four-wire mode, 62
Full duplex, 62
Full-duplex operation, 17
Function blocks, 73
Application, 75
Diagnostic messages, 97
Overview, 73
Technical specications, 89
Functionality of the CP 440, 11
Functionality of the CP 440, 11
G
Group alarm LED, 96
H
Half duplex, 62
Half-duplex operation, 17
Hardware Components, 12
I
Indicator for end of receive message frame, 59
Indirect parameter assignment, 85
Example, 86
Initial state of receive line, 62, 67
Initialization, 91
Initialization conict, 47
Installation, 56
Instance data block, 76, 78, 81, 84
Interface
X27 (RS 422/485), 127
Interface (physical), 50
Interface fault LED, 96
Interfaces, 12
Interrupt OBs, 73
INTF, 96
ISO 7-Layer Reference Model, 20
J
Jobs which can be processed simultaneously, 76
L
LADDR, 89
LEDs, 15, 71
Literature, 135
Load rmware, 70
Loading the conguration and parameters, 68
M
Master, 33
Memory requirements, 89
Message frame length, 59
Minimum Number of CPU Cycles, 89
Monitoring time for missing end ID, 59
Mounting, 53
Mounting the CP 440, 53
Multicomputing operation, 73
Multipoint, 32
O
OB 122
I/O access error, 53
OB 83 (insert/remove interrupt), 53
Index
Point-to-point connection CP 440 Installation and Parameter Assignment
138 Equipment Manual, 03/2022, A5E00057742-AE
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