Lauer PCS 950 Operation Console Application Guide

W37 (Command Word B): bits 0-7 control message block transmission enable; Suppress the arrow LED in the operation page/help/message for bits 8-10 respectively; Disable buzzer at position 11; Clear the historical buffer (rising edge) at position 12; Set the printing direction at position 13 (1=last in first out, 0=first in first out); Bit 14 prohibits message printer logs; Stop printing task at position 15.

W38 (Command Word C): The high byte represents the idle text number (0-127) and the flashing bit; The low byte is the operation page number (1-127) and the PRESET-P editable bit (bit 7).

W39 (Command Word D): Message printer control. Positive numbers (1~32767) represent the number of prints; Negative numbers (-1~-32767) indicate printer pointer adjustment; -32768 Clears the printer buffer.

W40 (Command Word E): Operate the printer text number (non-zero trigger printing).

5.4 Message Area (W41~W110)

W41~W104 consist of 64 words, each with 16 bits, totaling 1024 message bits. Each message bit corresponds to a message text (0~1023). W105~W109 are reserved areas for expansion.

5.5 Variable Area (W110~W255)

Used to store external variables (actual value/preset value). The variable format is defined in PCSPROW, and the starting address can be freely assigned.

Configuration tool PCSPROW and typical debugging process

6.1 PCSPROW Software

PCSPROW is the only authorized parameterization software used for creating data records. It integrates a text editor, variable definition, message configuration, priority settings, printer formatting, and more. The generated data records (. FRM files) along with firmware and drivers are downloaded to the device via PCS 733 cable. Attention: Only PCSPROW can be used, other software may cause malfunctions.

6.2 Debugging steps

Hardware preparation: Confirm power supply of 24V, DIL8=OFF (running), DIL9/10=OFF (write protection temporarily set to ON during programming), connect programming cable PCS 733 to PC serial port.

PCSPROW configuration: Create a new project, define PLC drivers (such as Siemens S5-AS511), and set communication parameters (such as baud rate). Create an operation page, place variables, assign message bits and text, set priorities and deletion modes.

Download: Set DIL9/10 to ON and start PCSPROW transmission. Successfully set OFF to prevent accidental writing.

Run test: Restart PCS and observe SYS LED and COM LED. If COM flashes, it indicates that communication has not been established. Check the wiring and driver settings. Press HELP+CLR to enter the offline menu (requires W36 bit 15=1).

Online monitoring: Monitor keywords such as W16, W17, W36 through PLC program to confirm priority switching and message response.

6.3 Common Problems and Solutions

Communication cannot be established: Check whether the DIL5/6 configuration is consistent with the driver, whether the cable is correct (PCS 733), and the PLC side interface settings.

Message not displayed: Confirm that the text corresponding to the message bit has been created and the priority has not been suppressed (W36 bits 8-11).

The preset value cannot be modified: check W38 bit 7 (PRESET-P editable) and password level (operation page access level).

The history buffer is empty: Confirm that the message is configured with a log attribute (set in PCSPROW) and that the W36 bit 1 is 1.

Printer not working: Check PRN interface parameters (internal variables Z027~Z031), as well as XON/XOFF or RTS/CTS flow control settings.

LED not lit: Confirm that W20~W27 are correctly assigned values and that W36 bit 4 does not suppress LED transmission.

Advanced features and engineering considerations

7.1 Password Protection and Access Levels

10 password levels (0~9) can be set, with level 0 being open by default. Each operation page can specify the required level. Call the password input dialog box through the soft key function 256 (LOGIN), enter the correct password to activate the corresponding level; Soft key 257 (LOGOUT) returns to level 0. Passwords are stored in non-volatile RAM.

7.2 Printer Control Details

PCS 950 supports XON/XOFF (TTY/RS232) and RTS/CTS (RS232 only) flow control. Printer text can contain formatting control characters (such as page changes, line breaks, etc.), which can be customized through internal variables Z076~Z083. The printing direction and pointer adjustment of the message printer buffer are flexibly controlled through W39.

7.3 Running hour counter and clock synchronization

The running hour counter can preset an initial value and maintain the count even when communication is interrupted (as long as W36 bit 2 is 1). The clock synchronization function allows the PLC to write its own RTC value to the PCS (triggering one-time synchronization by setting W36 bit 0=1), or write the PCS clock value to the PLC (W9~W12).

7.4 Explosion proof model PCS 950e

The front panel of PCS 950e is intrinsically safe (EEx ib IIC T4) and is used for hazardous area 1/2. It displays as a 240 × 128 pixel LCD (instead of the standard 320 × 240) and is connected to the ENT-DC-1.1-950 control unit in the non hazardous area via an intrinsic safety data cable DATL-A7-4. All software functions are completely consistent with the standard model.