B&R MAPPC700A-ENG, Руководство пользователя

Страница: 210 / 524

210
Technical data • Individual components
Panel PC 700 with 945GME N270 CPU board User's Manual V 1.16
I/O address and IRQ
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.
Resource Default setting Additional setting options
I/O address 2E8 238, 2F8, 338, 3E8, 3F8
IRQ IRQ10 IRQ 3, 4, 5, 7, 11, 12
Table 85: Add-on RS232/422/485 - I/O address and IRQ
Distance [m] Transfer rate [kbit/s]
≤
15 Typ. 64
≤
10 Typ. 115
≤
5 Typ. 115
Table 86: RS232 - Bus length and transfer rate
RS232 cable Property
Signal lines
Cable cross section
Wire insulation
Conductor resistance
Stranding
Shielding 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
Material
Characteristics
Total shielding PUR mixture
Halogen free
From tinned cu wires
Table 87: RS232 - Cable requirements