DeviceNet and SMC EX250-SDN
DeviceNet and SMC EX250-SDN
(OP)
Can anyone help me with the following problem:
I'm using SMC pneumatic module EX250-SDN on a DeviceNet with Allan Bradly DeviceNet Scanner 1747 SDN. And every time I disconect power supply for valves this EX250 module reports (minor) error to Scanner and this makes Scanner go to fault mode. And when I reconect powers supply for valves it takes up to 12 seconds befor Scanner Module goes back to normal operation (starts communicating with E250). Any possibilities to make this reestablishment of communication faster?
I'm using SMC pneumatic module EX250-SDN on a DeviceNet with Allan Bradly DeviceNet Scanner 1747 SDN. And every time I disconect power supply for valves this EX250 module reports (minor) error to Scanner and this makes Scanner go to fault mode. And when I reconect powers supply for valves it takes up to 12 seconds befor Scanner Module goes back to normal operation (starts communicating with E250). Any possibilities to make this reestablishment of communication faster?





RE: DeviceNet and SMC EX250-SDN
Commentary: Such delays seem common in many modern systems. My dad's first TV changed channels in a fraction of a second; modern digital TV systems take several seconds to lock-in to each channel. One used to be able to set a watch by the BBC time signal on old fashioned shortwave; now the beeps arrive about 18 seconds late via XM satellite radio. Sigh...
RE: DeviceNet and SMC EX250-SDN
Did you check the diagnostics on the node for any faults?
You can get a devicenet checker device from a local ab rep to check the integrety of your system. If the valve is putting out something bad on the network it would find it.