Siemens SIMATIC S7-1200 - 13.6 Legacy PtP communication (CM;CB 1241 only)

Communication processor and Modbus TCP
13.6 Legacy PtP communication (CM/CB 1241 only)
S7-1200 Programmable controller
System Manual, V4.2, 09/2016, A5E02486680-AK
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13.6
Legacy PtP communication (CM/CB 1241 only)
Prior to the release of STEP 7 V13 SP1 and the S7-1200 V4.1 CPUs, the point-to-point
communication instructions existed with different names, and in some cases, slightly
different interfaces. The general concepts about point-to-point communication (Page 1090),
as well as port (Page 1093) and parameter configuration (Page 1108) apply to both sets of
instructions. Refer to the individual legacy point-to-point instructions for programming
information.
Table 13- 91 Common error classes
Class description
Error classes
Description
Port configuration
80Ax
Used to define common port configuration errors
Transmit configuration 80Bx Used to define common transmit configuration errors
Receive configuration
80Cx
Used to define common receive configuration errors
Transmission runtime
80Dx
Used to define common transmission runtime errors
Reception runtime
80Ex
Used to define common reception runtime errors
Signal handling 80Fx Used to define common errors associated with all signal han-
dling