Siemens SIMATIC S7-1200 System Manual page 1124

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Table of Contents

Communication processor and Modbus TCP

13.3 Point-to-point (PtP) communication

Table 13- 24 Condition codes

STATUS (W#16#....)

Setting the maximum record length for Profibus communication

When using a CM1243-5 Profibus Master module to control an ET 200SP or ET 200MP

Profibus device that uses an RS232, RS422, or RS485 point-to-point module, you need to

explicitly set the "max_record_len" data block tag to 240 as defined below:

Set "max_record_len" in the instance DB (for example, "Send_P2P_DB".max_record_len) to

240 after running any configuration instruction such as Port_Config, Send_Config, or

Receive_Config.

Explicitly assigning max_record_len is only necessary with Profibus communication; Profinet

communication already uses a valid max_record_len value.

New request while transmitter active

Transmit aborted because of no CTS within wait time

Transmit aborted because of no DSR from the DCE device

Transmit aborted because of queue overflow (transmit more than 1024 bytes)

Reverse bias signal (wire break condition)

Transmission request rejected because end delimiter was not found in the transmit buffer

Internal error / error in synchronization between FB and CM

Transmission attempt rejected because the port has not been configured

CM has reset the interface to the FB due to one of the following reasons

The module has restarted (Power cycle)

The CPU has reached a breakpoint

The module has been reparameterized

In each case the module indicates this code in the Status parameter. The module resets

Status and Error to zero after the first received record for SEND_P2P.

Negative acknowledgement while writing the module

DP slave or module not available

Illegal syntax ID at an ANY pointer

Range length error when reading a parameter

Range error when reading a parameter

Alignment error when reading a parameter

The parameter contains a DB number that is higher than the highest permitted number (DB

number error).

The DB for the BUFFER parameter does not exist.

S7-1200 Programmable controller

System Manual, V4.2, 09/2016, A5E02486680-AK