Chapter 1
Product Overview
Document Version V3.1.0 (2020-08-18) 1
Chapter 1 Product Overview
QD1 indicates a compact remote digital IO module independently developed by
QKM, and can transmit more optocoupler-isolated signals to main controller; it has
multiple IO channels to support bus expansion.
QD1 supports Modbus TCP commonly used in the industry. Main controller can
access and control each IO channel upon connection to QD1 with network cable. QD1
module has dual RJ45 network ports with native routing and forwarding function, and
can be flexibly and freely networked with main controller via cascade communication or
daisy chain topology.
QD1 product series includes modular type of 32 In/32 Out, modular type and
economical type of 16 In/16 Out, as shown in Figure 1-1, Figure 1-2 andFigure 1-3:
Figure 1-1 Modular QD1 (32 In/32 Out)
Figure 1-2 Modular QD1 (16 In/16 Out)