Functional Scope Of Logic Functions (PLC), PSM, Function - GF54.21-S-3008TRA
Model 447
With Code ED5 (Parameterisable special module)
Except Code XM7 (MOPF II)
Model 448
With Code ED5 (Parameterisable special module)
Except Code XM7 (MOPF II)
Function overview
The parameterizable special module (PSM) provides functions of the programmable logic control (PLC). Using these software functions, the customer can realize simple logical operations between signals in the parameterizable special module's signal pool.
The PLC functions can be coded; this means that the input signals of the PLC can be freely selected by the customer from the signal pool.
Coding is performed via the diagnostics connection (X11). With some blocks, it is also possible to set parameters such as thresholds and times.
3 identically structured logic configuration blocks are provided, one configuration block for multifunction outputs, one configuration block for the arithmetic unit "AU" and one configuration block for signal outputs and the configuration of the multifunction inputs.
All logic function blocks with the following functions with quantity:
- Logic block 96
- Timer block 12
- Counter block 12
- Flip-flop block 24
- Threshold switch 24
- Hysteresis block 12
- Value tables 12
- Constants 60
Logic function blocks
The logic function blocks are structured in 12 identically constructed groups; 4 groups form each logic configuration block.
Processing takes place sequentially in groups by ascending group number.
After a group has been processed, the results of the processing are available in the signal pool and can be used further by one of the subsequent groups.
Cycle times of the configuration blocks
- Logic 20 ms
- Arithmetic unit 20 ms
- Multifunction outputs 10 ms
- Signal outputs 20 ms
A corresponding coding string can be generated with the PLC configuration Tool 1 for data entry of the configuration blocks.
Description of logic configuration block
Every logic configuration block consists of 4 identically constructed groups with various function blocks.
One configuration area for the function blocks contained in the 4 groups, one application identification (2 byte consisting of 2 bit application_type and 14 bit application_number), one checksum (2 byte).
Description of group
Every group can be activated individually.
One group comprises the following function blocks:
- One hysteresis block
- 2 threshold switches
- 8 logic blocks
- 2 flip-flops
- One timer block
- One counter
- One value table
- 5 constants
The assignment of the input signals and the configuration of the function blocks take place by diagnosis.
The functions of the individual function blocks are described in the following documents:
- PSM logic functions, hysteresis block function
- PSM logic functions, threshold switch function
- PSM logic functions, logic block function
- PSM logic functions, flip-flop block function
- PSM logic functions, timer block function
- PSM logic functions, counter block function
- PSM logic functions, value table function
- PSM logic functions, constants function
Filter function
The filter functions for various inputs of the function blocks are constructed identically, but can be coded individually.
A filter block is always active. If one or more filter parameter bits are set (where state does not equal "0"), the corresponding filter signal is also evaluated as an input signal (logical "AND").
Filter signals 1 to 3 have a special position as they represent the non-inverted outputs of logic blocks and are therefore variable in their configuration.
If Filterbit 8 is set, the logically inverted input signal is used.
| No. | Filter signal | Description |
|---|---|---|
| 1 | Group 12 Logikblock 1 Output A | Observes the state of output A (non-inverted output) of Group 12 Logikblock 1. |
| 2 | Group 12 Logikblock 2 Output A | Observes the state of output A (non-inverted output) of Group 12 Logikblock 2. |
| 3 | Group 12 Logikblock 3 Output A | Observes the state of output A (non-inverted output) of Group 12 Logikblock 3. |
| 4 | CiA447 awake | Bit is set if CiA447 CAN is active. |
| 5 | Terminal change from terminal 15R to terminal 15 | Bit is set with a terminal change from Terminal 15R to Terminal 15; reset takes place automatically after 3 PLC call cycles. |
| 6 | No overtemperature | The bit is set provided no overtemperature is detected in the PSM. |
| 7 | Terminal 58 | The bit is set as long as the Terminal 58 signal is not equal to 0. |
| 8 | Invert input signal | The evaluation of the input signal is inverted. |
| 9 | CAN fault | The bit is set as long as the control unit is operating in limp-home mode. |
| 10 | No undervoltage | There is no undervoltage. |
| 11 | Terminal 61 | Function for "Engine running". |
| 12 | Terminal 15 | Function as from "Ignition ON". |
| 13 | Terminal 15R | Function as from "Ignition key at radio position". |
| 14 | Terminal 15C | Function as from "Key in ignition". |
| 15 | Central locking system (CL) open | The CL status does not equal "Externally locked". |
| 16 | Run-on time active | Function as long as at least one reason for the ECU remaining active (incl. run-on time) is active. |
Application identification
A 2-byte hex dump is contained in the configuration data entry for identification purposes.
This is subdivided into application type (2 bit) and application identification (14 bit).
The data entry and its meaning are subject to the customer.
Logic configuration area
The properties of the function blocks are compiled and configured in their own area within the logic configuration block.
| PSM logic functions, hysteresis block function | GF54.21-S-3208TRA | ||
| PSM logic functions, threshold switch function | GF54.21-S-3209TRA | ||
| PSM logic functions, logic block function | GF54.21-S-3210TRA | ||
| PSM logic functions, flip-flop block function | GF54.21-S-3211TRA | ||
| PSM logic functions, timer block function | GF54.21-S-3212TRA | ||
| PSM logic functions, counter block function | GF54.21-S-3213TRA | ||
| PSM logic functions, values table function | GF54.21-S-3214TRA | ||
| PSM logic functions, constants function | GF54.21-S-3215TRA | ||
| Parameterizable special module (PSM) control unit component description | GF54.21-S-5005TRA | ||
| Overview of system components for parameterizable special module (PSM) | GF54.21-S-9998TRA |