Siemens Simatic S7 Series System Manual

Libraries
9.2 USS library instructions
S7-200 SMART
428 System Manual, 09/2015, A5E03822230-AC
Refer to "Using the USS protocol instructions" (Page 416) for and a listing of USS protocol
instructions and error codes and example programs.
9.2.2.6
USS protocol execution error codes
Table 9- 18 USS protocol execution error codes
Error code
Description
0
No error
1
Drive did not respond.
2
A checksum error in the response from the drive was detected.
3 A parity error in the response from the drive was detected.
4
An error was caused by interference from the user program.
5 An illegal command was attempted.
6
An illegal drive address was supplied.
7
The communications port was not set up for USS protocol.
8
The communications port is busy processing an instruction.
9
The drive speed input is out-of-range.
10
The length of the drive response is incorrect.
11
The first character of the drive response is incorrect.
12
The length character in the drive response is not supported by USS instructions.
13
The wrong drive responded.
14
The DB_Ptr address supplied is incorrect.
15
The parameter number supplied is incorrect.
16
An invalid protocol was selected.
17
USS is active; change is not allowed.
18
An illegal baud rate was specified.
19
No communications: the drive is not ACTIVE.
20
The parameter or value in the drive response is incorrect or contains an error code.
21
A double word value was returned instead of the word value requested.
22 A word value was returned instead of the double word value requested.
23
Invalid port number
24 Signal board (SB) port 1 is missing or not configured.
Refer to "Using the USS protocol instructions" (Page 416) for and a listing of USS protocol
instructions and error codes and example programs.

Siemens Simatic S7 Series Specifications

General

CPU	Varies by model (e.g., S7-300, S7-400, S7-1200, S7-1500)
Communication Interfaces	PROFIBUS, PROFINET, Ethernet, MPI
Programming	TIA Portal, STEP 7
Programming Languages	LAD, FBD, STL, SCL, GRAPH
I/O Modules	Digital, Analog, Specialty modules available
Operating Temperature	0°C to 60°C (standard models)
Mounting	DIN rail mounting
Operating Voltage	24V DC or 120/230V AC (varies by model)
Protection Class	IP20 (standard models)
Memory	Varies depending on the S7 model. Includes work memory (RAM) for program execution, load memory (EEPROM or Flash) for program storage, and system memory for operating system functions. Memory sizes range from kilobytes to megabytes.