Owner`s manual
CONTRACTOR PRECISION SERIES
Ownerâs Manual 17
The following table illustrates the relation between data rate and bus length or network size. The use of CAN repeaters is
strongly recommended for busses that exceed 1000 meters in length.
5 CONTROL PORT
The CONTROL PORT of the RCM-810 provides two control inputs, two control outputs and reference
connections for +5V and ground. The control inputs are configurable via IRIS-Net. They can be used for
example for switching between power on / standby modes. The two control contacts IN 1 and IN 2 are
internally connected via pull-up resistors and carry +5V (open). The control inputs can be activated using
external switches, pushbuttons or relays to connect them to ground potential. The two control outputs OUT 1
and OUT 2 are open collector outputs, which are highly resistive in the non-active state (off). In active state
(on) the outputs are connected to ground. The control outputs are configurable via IRIS-Net and are used to
signal internal states. LEDs, indicators or relays can be driven directly. The +5V reference connector
provides voltage supply for connected components.
Transfer rate (in kbit/s) Bus length (in m)
500 100
250 250
125 500
62,5 1000
20 2500
10 5000
Table 4.3: Transfer rate and bus length
Illustration 4.2: Pin-assignment of CAN jack and CAN plug
CAUTION:
The maximally allowable current at the +5V output is 200 mA.