Well, no & yes. All X10 sensors send RF signals. All X10 remotes send RF signals. The RoboDog and all modules operate by "listening" to the powerlines in your house for X10 PLC's (PowerLine Commands).
Transceivers - receive the X10 RF and translate the RF to PLCs, then send them out on the powerlines for the modules to receive.
So, in your case, something needs to be between the RF signals the MS10A sends in order to catch them, turn them into PLCs and transmit them on the powerline.
Unfortunately, the Security Sensors (MS10A, DS10A, etc) send their RF "wrapped" in a security code, and only those receivers which have been "taught" the particular code for that particular device know what sensor is sending the signal. When you "install" a security device into a receiver like the DS7000, AHP and your computer (via On-Alert plug-in), or the V572RF32 transceiver), the sensor's security code gets recorded. Then when a RF signal gets received, the security code that it is "wrapped-in" identifies which sensor it is.
The DS7000 isn't your answer because it's not designed, and won't do what you want to do.
Without a PC and AHP, a CM15a and the plugins ($49) the V572RF32 ($114) won't do you much good. Yes the V572 will recognize the MS10A's RF and send a PLC to whatever HC/UC you select, but the MS10A will send a reset signal 10 seconds after it's triggered, and then wait 45 seconds to send another trigger.
What you need instead of an MS10A is an MS14A EagleEye (there's 2 or 3 different models) motion sensor that will send an RF signal that is not "wrapped" in a security code and already has a Hc/Uc address. But you'll still need a transceiver to pluck the RF from the air and send it's corresponding PLC on the powerline. I believe the cheapest is a TM751. And as a bonus, the EagleEye is itself programmable for not only it's address, but also for how long you want it to delay in sending an "OFF" signal.
Make sense?