JTAG device chain parameters
means, but we provide these debug adapters for use with Keil's Cx51 toolset.
Follow the Keil instructions on how to use that debug adapter. You will likely have to add Silicon Devices' driver so that uVision is happy and can see it.
Note that there are two FPC connectors on the underside of PPM B1. One is for the USB debug adapter via Pumpkin's JFPC-8051, the other is a debug connector not normally used.