Siemens SINUMERIK 840DE SL Commissioning Manual

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● Access mode example 4:

The search concept is in Z. S contains the column index of the column in which concept is

being searched for. The line index of the concept found is output:

VAR1 = Thread[0.125,1,4] ;VAR1 has the value 2

Explanation:

Search for value 0.125 in column 1 of array "Thread" and transfer the line index of the value

found to VAR1.

● Access mode example 5:

Z contains the line index of line in which concept is being searched for. The search concept

is in S. The column index of the concept found is output:

VAR1 = Thread[4,0.2,5,1] ;VAR1 has the value 1

Explanation:

Search in line 4 of the "Thread" array for the value 0.2 and transfer the column index of the

value found to VAR1. Comparison mode 1 was selected because the values of line 4 are

not sorted in ascending order.

7.2.3 Scanning the status of an array element

Description

The Status property can be used to run a scan to find out whether an array access operation

is supplying a valid value.

Programming

Syntax:

Identifier [Z, S, [M[,C]]]

.vld

Description: Status is a read-only property.

Parameters: Identifier Name of array

Return Value: FALSE =

TRUE =

invalid value

valid value

Example

DEF MPIT = (R///"MPIT",,"MPIT",""/wr3)

DEF PIT = (R///"PIT",,"PIT",""/wr3)

PRESS(VS1)

MPIT = 0.6

IF MET_G[MPIT,0,4,1].VLD == TRUE

PIT = MET_G[MPIT,1,0].VAL

REG[4] = PIT

REG[1] = "OK"

ELSE

REG[1] = "ERROR"

Graphic and logic elements

7.2 Defining an array

SINUMERIK Integrate Run MyScreens (BE2)

200 Programming Manual, 12/2017, 6FC5397-1DP40-6BA1

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Questions and Answers:

M
mitchelljenniferJul 25, 2025
What to do if all four LEDs on the Siemens Controller PLC flash (DI disaster)?
- J
  Joshua LarsonJul 25, 2025
  If all four LEDs on the Siemens Controller PLC are flashing, it indicates a system error. Here's what you should do: 1. Stop the PLC (set the "PLC" switch to position 2). 2. Perform a hardware reset. 3. Read the diagnostic buffer using STEP 7 to analyze the error in detail. 4. Relay the diagnostic buffer information to the Hotline / Development Service. 5. If requested after the hardware reset, perform a general reset. You can then read the diagnostic buffer with the PLC in the Stop state. Alternatively, resetting or reloading the PLC program might resolve the issue. Even if the system returns to normal, send the diagnostic buffer content to the Development Office.
J
Justin LeeAug 8, 2025
How to troubleshoot no MPI connection to Siemens Controller PLC?
- A
  Amanda CarrollAug 9, 2025
  If there is no connection via MPI to the Siemens Controller PLC, the MPI cable might not be plugged in or could be defective. Also, the STEP 7 software might not be correctly configured for the MPI card. To test, create a link with the programmer in the STEP 7 editor using the "Direct_PLC" connection. A number of node addresses should appear. If they don't, the MPI cable is likely defective or not plugged in.

Siemens SINUMERIK 840DE SL Specifications

General

Application	High-end machine tools
User Interface	SINUMERIK Operate
Axis Capacity	Up to 31 axes
Safety Integrated	Yes
Relative Humidity	5% to 95% (non-condensing)
Control System	CNC
Type	SINUMERIK 840DE SL
Programming Languages	DIN 66025, ISO 6983, G-code
Communication Interfaces	Ethernet, PROFIBUS, PROFINET
Control Loops	Position, Speed, Current
PLC	Integrated SIMATIC S7-300 PLC
Data Storage	CompactFlash card, hard disk
Operating Temperature	0°C to 45°C
Spindle Capacity	Dependent on machine mechanics