Whats the difference between PIO-337 and PIO-347?

The PIO-337 is the standard CANopen bus coupler for the Parker-I/O system. A cheaper alternative is the PIO-347. The following table lists the differences between the PIO-337 "standard" and PIO-347 "econo" versions of this bus coupler.

	Standard	Econo

Total I/O bits supported	512	32
24V Fieldside Power Supply	Yes	No*
No. of PDO	32 Tx / 32 Rx	5 Tx / 5 Rx
Device profile	DS-401, programmable error response, marginal check, edge-triggered PDOs	DS-401, programmable error response
Description	No1	No2
Input current	500 mA	260mA

In addition, the update rate of the PIO-347 is considerably slower than that of the PIO-337.

	Standard	Econo

Base Update Rate	1 ms	5 ms
Each Add'l Digital Point	15 us	100 us
Each Add'l Analog Point	40 us	270 us

* The PIO-347 requires the additional purchase of a PIO-602 Power Supply module