In these two stages, even if the input state and data change, the status and data of the corresponding units in the I/O image area remain unchanged. Therefore, if the input is a pulse signal, the width of this pulse signal must be greater than one scan cycle to ensure that the input can be read under any circumstances.

This product is flexible in application and can form various optical fiber networks. The logically independent dual-bus electrical interface enables backup of electrical interfaces or single-device access to dual-redundant bus systems; when using a point-to-point network, it can connect two Profibus DP bus segments via optical fiber; when using a dual-optical-port chain network, it enables multi-segment Profibus DP bus connections (up to 200) on the optical fiber bus. At the same time, this product uses dual optical ports to achieve dual-fiber ring network redundancy. When an optical fiber fails, the system will rebuild the network link within 10ms to ensure normal system communication and achieve self-healing protection for signal transmission. The system will automatically recover after the network fault is resolved. This series of products uses the company's self-developed proprietary ring network protocol Ci-ring, which requires no setup, no root node, and quickly completes network ring formation and de-ring functions. This series of products is plug-and-play, requires no configuration, and greatly simplifies the installation and debugging process for users.
Performance indicators:
Data electrical interface:
* 9-pin Sub_D socket connector, pin definition complies with Profibus DP protocol specifications.
* Supports Profibus DP bus standard.
* Communication rates: 9.6kBit/s, 19.2 kBit/s, 45.45kBit/s, 93.75k kBit/s, 187.5kBit/s, 500kBit/s, 1.5MBit/s, 6MBit/s, and 12MBit/s.
* Rate setting: automatic recognition or DIP switch setting.
* Signal delay (electrical port): ≤11Bit.
* Features 4000V lightning protection, 1.5A overcurrent protection, and 600W surge protection.
* Terminal resistor: The device does not include a terminal resistor; please connect externally as needed.
Optical interface:
* Optical wavelength: multimode 850nm, 1310 nm; single-mode 1310 nm, 1550nm.
* Transmission fiber: multimode 50/125 um, 62.5/125 um, 100/140um; single-mode 8.3/125 um, 9/125um, 10/125um.
* Transmission distance: multimode 2Km, single-mode 20Km, longer distances optional.
* Optical interface type: SC, FC, ST optional; SC optical interface is standard.
* Optical line bit error rate: <10??.
* Signal delay (optical port): ≤1.6us/node.
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