Effective.June.2007
Page 3
RS-485 PONI
66A2070 Rev. B
3d. Mounting to an MP-4000
To mount an RS-485 PONI onto the MP-4000, use the
U-shaped mounting bracket and #6 32 x ¼” pan head
screws supplied with the MP-4000. Use this bracket only
when a URTD is not mounted to the MP-4000. If a URTD is
mounted on the MP-4000, the RS-485 PONI can piggy back
directly on the URTD. The machine screws supplied with
the RS-485 PONI are then used to screw into the molded
plastic mounting-holes of the URTD. Refer to the MP-4000
Instruction Book IB02602002E for additional information. To
order this mounting bracket use part number 7066C H0.
Figure 6: Mounting to an MP-4000
3e. Mounting to an ATC-400
To mount the RS-485 PONI to the rear of the ATC-400, use the
stacking screws that are shipped with the RS-485 PONI. On the
rear panel of the ATC-400, there are two treaded holes that are
to be used for attaching PONI type devices. Refer to Figure 7.
Figure 7: Mounting to an ATC-400
Mount the RS-485 PONI with the label facing up, the RS-485
connector on the left and the ribbon cable on the right, as
you are facing the rear panel of the ATC-400.
Attach the ribbon cable from the RS-485 PONI to the
receptacle of the IQ device, as shown in Figure 3 on Page 2,
and firmly tighten the screws on the plug lock assembly.
3f. Mounting to an IQ Transfer II
To mount the RS-485 PONI to the rear of the IQ Transfer II
use the stacking screws that are shipped with the RS-485
PONI. On the rear panel of the IQ Transfer II, there are two
sets of threaded holes that are to be used for attaching PONI
type.devices .
Use either set for mounting the RS-485 PONI. Refer to
Figure 8. Mount the RS-485 PONI with the label facing up,
the RS-485 connector on the left and the ribbon cable on the
right, as you are facing the rear panel of the IQ Transfer II.
Attach the ribbon cable from the RS-485 PONI to the
receptacle of the IQ device, as shown in Figure 3 on Page 2,
and firmly tighten the screws on the plug lock assembly.
Figure 8: Mounting to an IQ Transfer II
Simplified Wiring Rules
The RS-485 PONI provides the user with a half-duplex
EIA/RS-485 network connection. EIA/RS-485 is a multi-drop
industrial-grade communications standard.
It is a “balanced differential” signal which uses a twisted-pair
containing the “A” and “B” signals and a common. For this
reason, it is very important to carry all three conductors to
help ensure a high-quality communications network.
