Siemens Simatic S7 Series System Manual

Libraries
9.2 USS library instructions
S7-200 SMART
System Manual, 09/2015, A5E03822230-AC
421
Parameter
Description
Inhibit Indicates the state of the "Inhibit" bit on the drive:
• 0: not inhibited
• 1: inhibited
To clear the "Inhibit" bit, the following bits must be OFF:
• "Fault"
• "RUN"
• "OFF2"
• "OFF3"
Fault Indicates the state of the "Fault" bit:
• 0: no fault
• 1: fault
The drive displays the fault code. (Refer to the manual for your drive). To clear the
"Fault" bit, correct the cause of the fault and turn on the "F_ACK" bit.
Table 9- 9 USS_CTRL example program
To display in LAD or FBD:
Network 1 // Control box for drive 0
LD SM0.0
= L60.0
LD M10.0
= L63.7
LD M10.1
= L63.6
LD M10.2
= L63.5
LD M10.3
= L63.4
LD M10.4
= L63.3
LD L60.0
CALL USS_CTRL, L63.7, L63.6, L63.5, L63.4,
L63.3, 0, 1, 100.0, M1.0, VB2, VW4, VD6,
M0.1, M0.2, M0.3, M0.4
To display in STL only:
Network 1 // Control box for drive 0
LD SM0.0
CALL USS_CTRL, M10.0, M10.1, M10.2, M10.3,
M10.4, 0, 1, 100.0, M1.0, VB2, VW4, VD6,
M0.1, M0.2, M0.3, M0.4
Refer to "Using the USS protocol instructions" (Page 416) for 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.