SAIA PCD4.W500/W600 Intelligent Simulation Module

Important note: If the module was previously configured in continuous mode, this configuration will be saved in EEPROM and will remain in continuous mode after the next power on. If you want to restore single mode, you must reconfigure (configure all channels as' disabled 'or write configuration 0000H). The use of FBox or FB's Config function can easily solve the problem.

Expansion mode: Configure the module through function blocks (FB) or FBox (in Fupla of PG4) to enable continuous measurement, proportional format, user scaling, comparator, etc. All configuration data is stored in the EEPROM of the module and automatically loaded upon power up.

1.6 Function Block (FB) List (IL Programming)

RdValUp: Read unipolar input values (e.g. 0... 10 V → 0... 10000)

RdValBp: Read bipolar input values (such as ± 10 V → -10000...+10000, or temperature -500... 1500)

RdStatus: Read the channel status register (including comparator results, error flags, etc.)

Config: Configure the entire module (requires providing a configuration data block DB, including configuration codes, comparison values, hysteresis, user scaling parameters, etc. for each channel)

WrCData/RdCata: Write/read configuration parameters of a single channel (such as dynamically changing comparison values)

Control: Send commands (such as saving configuration to EEPROM, hot restart, cold restart, self-test, etc.)

RdInfo: Read module information (EEPROM checksum, module identification, hardware/firmware version, production year/week)

All FB readers and writers have a built-in timeout mechanism (about 15 ms), and if the module does not respond, the timeout flag will be set. Configuration FB should be called in XOB 16 (cold start) to avoid frequent calls in COB (time-consuming).

1.7 Example of configuring data blocks

The length of the configuration data block (DB) is 58 bytes, and the structure is as follows:

Byte 0: Reserved for checksum (initially set to 0, Config FB will automatically calculate and store)

Byte 1: Power frequency suppression (1=60 Hz, 2=50 Hz, used for high-resolution continuous mode)

Then each channel has 7 parameters (out of a total of 8 channels):

Configuration code (16 bits): determines mode, range, format, whether to enable comparator, etc. (e.g. 0001H=voltage 10V bit format low resolution, 0009H=voltage 10V proportional format low resolution, 0021H=voltage 10V bit format high resolution, 20EBH=Pt100 4-wire 0... 600 ° C, etc.)

Comparison value A (16 bits)

Hysteresis A (position 8)

Comparison value B (16 bits)

Hysteresis B (8th position)

User zoom range (16 bits)

User zoom offset (16 bits)

The manual provides a complete configuration code table (low resolution/high resolution, voltage/current/temperature, different range modules).

1.8 Programming Examples

The manual provides three complete IL examples:

Voltage input example: Using PCD7.W100, configure channel 0/1 for bit format low resolution, 2/3 for proportional format low resolution, 4/5 for bit format high resolution, and 6/7 for proportional format high resolution. Polling reads the value of each channel in COB and stores it in a register.

Pt100/1000 temperature measurement example: Use PCD7.W101+PCD7.W120 (4-wire), configure channel 0/1 as Pt100 0... 600 ° C, 2/3 as Pt1000-50... 150 ° C, and enable comparator (set A/B limit and hysteresis). Simultaneously read values and status.

Example of a two-wire transmitter: Using PCD7.W104 (4... 20 mA), the user scales to map 4... 20 mA to -100...+800 ° C (K-type thermocouple analog) and sets the comparator.

These examples show how to define the configuration DB in RAM (ensure that the checksum is 0 after the first download to trigger the configuration), call Config FB in XOB 16, and read each channel circularly in COB.

1.9 FBox support (Fupla programming)

For graphical programming (Fupla), PG4 provides dedicated FBox: "PCD4.W500", "PCD4.W5 Temp_3/4 wire", and "PCD4.W5 Channel Status". Users can set the base address, range module type, format of each channel (bit/scale/user zoom/disable), comparison value, hysteresis, user zoom range/offset, etc. in the adjustment window. FBox automatically generates configuration code and reads logic. Please note that all settings, except for the channel state, are in offline mode and must be recompiled after modification.

PCD4.W600 Intelligent Analog Output Module

PCD4.W600 is an intelligent analog output module with electrical isolation, 12 bit resolution, and 8 output channels (divided into 4 groups of 2 channels each). By inserting different range modules (PCD7. W30x), it is possible to output 0... 10 V, ± 10 V, 0... 20 mA, or 4... 20 mA signals.

2.1 Hardware and Range Module

Substrate PCD4.W600: Includes isolated DC/DC converter, microcontroller, and I/O bus interface. Can insert 4 range modules (2 channels per module):

PCD7.W300:2 channel, 0... 10 V

PCD7.W302:2 channel, ± 10 V

PCD7-W304:2 channel, 0... 20 mA

PCD7.W305:2 channel, 4... 20 mA

The module has a "plug and play" recognition function: the software can automatically read the type of range module installed in each slot.

2.2 Technical specifications (substrate)