User`s manual

BL160030 s System Development
BL1600 Interfaces
Figure 4-1 shows a block diagram of the BL1600.
Figure 4-1. BL1600 Block Diagram
Digital Inputs
The 12 digital inputs, IN00IN11, ac-
cept CMOS levels, which are at a
digital threshold of approximately 2.5
V. The digital inputs are arranged in
two groups, IN00IN07 and IN08
IN11, on header H1. Each input line
has a 4.7kΩ pull-up resistor. Figure
4-2 shows the pinout for header H1.
Although the digital inputs are IN00-IN11, the software
function calls refer to the channels as channels 112.
Digital Outputs
There are 14 digital outputs. The EN485 line can be used as an additional
digital output if RS-485 communication is not usedno special jumper
settings or software calls have to be made. The SCL line can be used as an
additional digital output on the Bl1610, which has no EEPROM.
The output lines are arranged into two groups.
 OUTB1OUTB8  eight 8-bit parallel outputs
 OUT1OUT6, EN485 and SCL  eight individually selectable lines
IN00
IN02
IN04
IN06
IN08
IN10
GND
1
3
5
7
9
11
13
2
4
6
8
10
12
14
H1
IN01
IN03
IN05
IN07
IN09
IN11
+5 V
Figure 4-2. BL1600 Digital Inputs
Header H1 Pinout
Digital
Output
Z180
RAM
EPROM
EEPROM
Real-Time Clock
Battery
Digital
Input
User lines
E, Interrupt, Reset
Misc.
OUTB
OUT
SCL
PLCBus
HC
K
High-current output
+

3
2
DMA request
3
8
7
7 7
12
IN
OUT7 is the same as EN485.
If you use EN485 to enable
RS485 transmission, it is not
available as an output.
Each user line selects a
group of 16 registers.
RS-485
RS-232
!