Jumper Descriptions on Little Giant BL1100 – ZWorld C-Programmable Controller

If you are doing a conversion form Zworlds little giant BL1100, start by understanding what the jumpers are and how they are connected to your application.  Your new design will be dependent on the settings and will likely only need a fraction of the capability of this BL1100 board.  We have seen some applications that use most of its functionality, but it is usually just a couple of IO ports and and communications ports…

Table B-4. Standard BL1100 Jumper Settings
Header Pins Description Factory
Default

J12

1–2

Connect for factory-default RS-232 or RS-485
programming mode, remove for run mode or
user-defined programming mode

Connected

6–10

CTC3 output drives CTC2

8–9

CTC2 output drives CTC3

6–11

CTC2 operates at 16X baud rate of z0

6–12

CTC2 operates at 16X baud rate of z1

8–11

CTC3 operates at 16X baud rate of z0

8–12

CTC3 operates at 16X baud rate of z1

9–11

CTC2 drives external clock at 1/16 z0 baud
rate

10–12

CTC3 drives external clock at 1/16 z1 baud
rate

1–2
J13

J14

J014

J15
J16
J17

SIO Port A to RS-232 (J8)

Connected

2–3

SIO Port A to RS-485 (J3)

3–4

ZIO Port 1 to RS-485 (J3)

1–4

ZIO Port 1 to RS-232 (J8)

1–2

SIO Port A to RS-485 (J3)

2–3

ZIO Port 1 to RS-485 (J3)

Connected

1–2

RX and TX clocks come from SIO

Connected

2–4

TX clock from SIO, RX clock from external
source via pins 3–4 of header J3/J301

1–2

SRAM smaller than 256K

2–3

SRAM 256K or larger

1–2

EPROM 32 K

2–4

EPROM larger than 32K

1–2

Connect to enable excitation resistors for
analog input signal conditioning op-amps

Connected

Connected
Connected
Not
connected

continued…

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Table B-4. Standard BL1100 Jumper Settings (concluded)
Header

Pins

1–2
J18

Factory
Default

Description

RS-485 three-state always enabled

Connected

2–3

RS-485 three-state controlled by PB0

none

RS-485 three-state always disabled

1–2

Connect to enable onboard +5 V power
supply, disconnect for external power supply

Connected

1–2

EPROM smaller than 256K

Connected

2–4

EPROM 256K

1–2

Write-protect upper part of EEPROM

2–3

Write-enable upper part of EEPROM

J22

1–2

Connect to enable watchdog timer

Not
connected

J25

1–2

Startup mode factory-default RS-232 or read
from EEPROM

Connected

1–2

Remote reset using RXC

2–3

Remote reset using CTSB

none

No remote reset

1–2

Connect to enable switching power supply,
disconnect for time/date clock to control
power supply

1–2

Output DAC to pin 1 on J5/J501

2–3

Pin 1 of J5/J501 is analog ground

1–2

Connects E to expansion bus J24 pin 52

2–3

Connects BATACT to expansion bus J24 pin
52

J31

1–2

Ties high-voltage driver SUB signal to ground
to keep it from floating

Connected

J32

1–2

Connect to control use of ENMI signal on
expansion bus J24 pin 9

Connected

J19
J20
J21

J26

J27

J28

J29

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Connected

Not
installed

Connected

Connected
Not
installed