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Technical data • Individual components
Automation PC 620 with 945GME N270 CPU board User's Manual V 1.10
The setting for the I/O address and the IRQ can be changed in the BIOS setup (under
"Advanced" - submenu "Main board/Panel Features" - submenu "Legacy Devices", setting
"COM E"). Please note any potential conflicts with other resources when changing this setting.
Bus length and cable type RS232
The maximum transfer rate of 115 kBit/s depends on the cable type being used.
The material used for the cable should preferably have all or most of the following properties in
order to reach an optimal transfer rate.
RS422 - Bus length and cable type
The RTS line must be switched on to activate the sender.
The maximum transfer rate of 115 kBit/s depends on the cable type being used.
The material used for the cable should preferably have all or most of the following properties in
order to reach an optimal transfer rate.
Distance [m]
Transfer rate [kBit/s]
≤
15
Typ. 64
≤
10
Typ. 115
≤
5
Typ. 115
Table 92: RS232 - Bus length and transfer rate
RS232 cable
Property
Signal lines
Cable cross section
Wire insulation
Conductor resistance
Stranding
Shield
4 x 0.16 mm² (26AWG), tinned Cu wire
PE
≤
82
Ω
/ km
Wires stranded in pairs
Paired shield with aluminum foil
Grounding line
Cable cross section
Wire insulation
Conductor resistance
1 x 0.34 mm² (22AWG/19), tinned Cu wire
PE
≤
59
Ω
/ km
Outer sheathing
Item
Characteristics
Entire shielding
PUR mixture
Halogen free
From tinned cu wires
Table 93: RS232 - Cable requirements
Distance [m]
Transfer rate [kBit/s]
1200
Typ. 115
Table 94: RS422 - Bus length and transfer rate
Summary of Contents for Automation PC 620
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Page 568: ...568 Appendix A Glossary Automation PC 620 with 945GME N270 CPU board User s Manual V 1 10 ...