德國DOLD安全系統監控諸如緊急制動、護罩門、檔光板、雙手控制等安全功能。這個經TüV認證的系統使用免費的SAFEMASTER PRO設計軟件配置，該軟件具有直觀的用戶界面，通過拖放(drag & drop)進行簡便、低成本的模塊配置。支持儲存卡，方便將配置數據轉移到其他系統，這使用戶能使用一臺單一的安全系統執行包括從簡單機械到聯網設備和高度復雜的系統等各種各樣的自動化任務。DOLD的新型模塊化和可配置的SAFEMASTER PRO安全系統，能監視您的機器和設備的所有安全電路，主控單元的輸入和輸出數量可以用擴展模塊在任何時候進行擴展，使系統能以*方式適應不同的應用。SAFEMASTER PRO能滿足PL e / Cat 4或SIL CL3的所有安全規定，并已得到TüV的認證。
DOLD bus modules-----DOLD總線模塊技術說明書

Increasing complexity of control systems in machines and plants and a strong tendency to decentralization induced by an increasing use of inligent subsystems explain the boosted communication needs between control and peripheral systems in todays machine and plant control. Ever-growing data amounts require a high-performance bus system which is able to transmit large bulks of data between inligent control elements in a reliable and quick manner. 

Input and output modules (I/O modules) are peripheral modules of a PLC in the bus system: Input modules collect information on the processes to be processed. Via the bus system data items are transmitted to the control unit where they are processed. 

Again via the bus network control commands are transmitted to the output modules which pass them on to the actuators. Both analog and also digital DOLD bus modules for the CANopen field bus system are available. We also offer Suconet-compatible devices.

DOLD總線模塊技術說明書 
DOLD bus modules:
Compact, ideal for installation in distribution boards
Potential-free relay outputs ensure troublefree operation
One-stop offering: I/O modules fitting to DOLD CANopen PLC
Plug&Play mode: Save cost by sparing the sliprings for wireless transmission of multiple input and outputs
CANopen field bus system:
Wide choice from compatible devices from different manufacturers
Open standardized CANopen system offers independence of specific suppliers
High extent of reliability and fault tolerance
Fast transmission of small quantities of data
Flexibility by freely configurable parameters, e.g. address, transmission rate
Field bus system, general:
Easy and clear wiring
High flexibility of systems with respect to changes and extensions
Easy incorporation of control concepts in overriding management systems (gateway)
Save up to 40% of cost for projecting, installation, commissioning and maintenance
DOLD總線模塊技術說明書