Chapter 2: Hardware Installation
2-3
Echo
User's Manual, ver. 0.00
Custom Port Addresses
You can generate other port addresses by making changes to the
programmable logic found on the Echo adapters. If you require
specific port addresses not listed please contact the Connect Tech
sales department for further information.
Figure 2:
DIP switch block SW1
IRQ channel(s)
Status port address (see Tables 2 & 3)
Reserved - must be off
Port addresses (see Tables 2 & 3)
When on, port 2 is COM2 (2F8 hex)
When on, port 1 is COM1 (3F8 hex)
Table 2:
Switch settings(Echo 8)
Switch
3 4 5
Port
Status
1 2 3 4 5 6 7 8
Port
on on on 200 208 210 218 220 228 230 238 240
on on off 240 248 250 258 260 268 270 278 280
on off on 280 288 290 298 2A0 2A8 2B0 2B8 2C0
on off off 2C0 2C8 2D0 2D8 2E0 2E8 2F0 2F8 300
off on on 300 308 310 318 320 328 330 338 340
off on off 2B0 2B8 2C0 2C8 2D0 2D8 2F0 2F8 288
off off on 290 298 2A0 2A8 2B0 2B8 2C0 2C8 2D0
off off off 190 198 1A0 1A8 1B0 1B8 1C0 1C8 1D0
Note:
You enable the status port
w
hen switch 7 is in the on position.
You disable the status port when switch 7 is in the off position.
