ProSoft MVI69-PDPMV1 CompactLogix PROFIBUS DP Master Module

The ProSoft MVI69-PDPMV1, also cataloged as the MVI69-PDPMV1 Master Communication Module, operates as a dedicated hardware component for PROFIBUS DP Master (V1) network interfacing within Allen-Bradley CompactLogix and MicroLogix 1500 architectures. Hardware Specifications Parameter Specification Model MVI69-PDPMV1 Brand ProSoft Technology Origin USA Weight 0.42 lbs Dimensions 4.6 cm x 15.2 cm x 8.9 cm Operating Temp 0 deg C to 60 deg C (32 deg F to 140 deg F) Power Consumption 800 mA @ 5 VDC (Backplane current load) Platform Compatibility Allen-Bradley CompactLogix (1769 backplane) and MicroLogix 1500 Communication Ports 1 x DB9 Female (RS-485 optically isolated PROFIBUS DP), 1 x RJ45 (RS-232 serial config) Baud Rate 9.6 kbps to 12 Mbps (Auto-baud detection) Slave Capacity Up to 125 PROFIBUS DP Slave devices I/O Data Capacity Up to 1536 bytes Input / 1536 bytes Output Protocol Conversion Latencies & Bus Integration The MVI69-PDPMV1 interfaces directly over the local 1769 I/O backplane bus, functioning as an in-rack input/output module to achieve deterministic data transfer between the Rockwell Automation processor memory and connected field networks. Module communications process cyclic DP-V0 parameters alongside acyclic DP-V1 data messaging structures, minimizing internal protocol conversion latencies when polling variable frequency drives and process automation instrumentation. Dedicated optical isolation on the DB9 RS-485 transceiver stage suppresses common-mode voltage spikes and ground loops across network segments operating up to 12 Mbps. Frequently Asked Questions Q: What are the backplane power considerations when installing this module in a 1769 rack? A: The MVI69-PDPMV1 draws 800 mA at 5 VDC directly from the 1769 backplane bus. The power supply distance rating and total rack current budget must be verified to prevent logic bus voltage dips. Q: How is cyclic and acyclic data exchange managed between the module and controller? A: Cyclic I/O and acyclic DP-V1 messaging are transferred across the backplane to the controller memory via standard ladder logic execution utilizing provided Add-On Instructions (AOI) and block transfer routines. Field Installation Guidelines Power down the 1769 backplane expansion bank prior to inserting or removing the module. Hot-swapping on 1769 I/O buses without removing system power is not supported and may result in hardware damage. Secure the module onto the standard DIN rail using the top and bottom latch mechanisms, ensuring full connection with the adjacent 1769 bus connector. Terminate the PROFIBUS DB9 connector using standard RS-485 shielded twisted-pair cabling. Ensure line termination resistors are switched to ON at the physical end nodes of the PROFIBUS segment. Connect the RS-485 shield braid to the local protective earth (PE) ground clamp to maintain EMC immunity and mitigate high-frequency field noise.