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The ER-A57R1 is the control ROM used for the following options of
the ER-A570.
The control ROM (ER-A57R1) must be installed when any of the
following options is used.
ER-A6IN:
ER-A5RS:

SRN inline I/F
RS232 I/F

Before working on the installation, turn off the power switch on the
ECR and unplug the AC cord from the AC outlet.
Also save the memory contents via the serial interface before pro-
ceeding to the installation work.

1) Remove the top cabinet.

2) Insert the control ROM in the IC socket ROM2 on the main PWB

(Fig. 1).

Fig. 1

1

Key operation:
400 

→

 TL 

2

Functional description:
A sum check is done for the option ROM (Address hex C80000H
thru CBFFFFH.)

3

Check the following items:
Check the termination printout.

4

Test termination:
The test terminates after printing the termination printout.

Termination printout

 Normal termination

400 

 O-ROM

27020

≅ ≅ ≅ ≅ ≅

 

≅ ≅ ≅ ≅ ≅

 

  E – – – – –

400 

 O-ROM

27020

≅ ≅ ≅ ≅ ≅

 

≅ ≅ ≅ ≅ ≅

 

The underlined section must be the same as the standard ROM
test specification. (Refer to JOB #130.)

Note:  "

≅ ≅ ≅ ≅ ≅

" means the ROM version number. 

The underlined section (10 bytes) of code table is provided in
the ROM as a standard and the table content is always
printed. 
The table position is the upper 10 digits of the ROM address.
The check sum correction address is the last address -0FH.

Note: In the case of the ER-ROM, the ROM version number is dis-

played in the upper and the lower stages.
In the case of the MASK-ROM (future specification), the MASK
ROM code is displayed in the upper stage, and the ROM
version number is displayed in the lower stage.

130

S-ROM 

   27040RAJ1A 

RAJ1A 

400

O-ROM   27020RAP1A 

RAP1A 

DOT DISPLAY :

R

M

O

O P T

 7 

The ER-A6IN and ER-A5RS are interface PWB options for the ER-
A570. The control ROM (ER-A57R1) must be installed in order to use
this PWB options.
Refer to the programming manual for system setup and configure the
correct setting appropriate to the devices selected.

1) Transmission Method

1. Carrier sense multiple access with collision detect (CSMA/CD)
2. Single channel, half duplex
3. High level data link controller (HDLC)

2) Transmission Medium

1. Topology: Common Bus System
2. Coaxial cable RG-58/u

3) Transmission Speed

480KBPS/1MBPS (Selectable) ... SRV mode JOB#922.

4) Data Transfer Method

Packet-data transfer method
Data side of 1 packet is MAX. 270 Byte.

5) Maximum Length of Transmission Cable

1000m (3281 ft) . . . trunk cables + branch cables; however,
branch cable length is 10m (5m 

×

 2) for each terminal.

6) Max Terminals

16 Terminals max. (15 slaves, 1 master)

1) Online interface

a) Interface

: RS232

b) Duplex type

: Half-duplex/Full-duplex

c) Line configuration

: Direct connection/Modem connection

d) Data rate

: 9600, 4800, 2400, 1200, 600 and 300 bps 

 (Programmable)

e) Synchronizing mode : Asynchronous
f) Parity check

: Vertical parity check (odd)

g) Code

: ASCII

h) Bit sequence

: LSB first

i)

Data format

: 1 start bit + 7 dat bits + 1 parity + 1 stop bit

b  1 b  2 b  3 b  4 b  5 b  6 b  7

Data 

bits    

stop 

bit

Start bit

Parity bit

j)

Protocol

: Polling/selecting (Simple procedure)

k) Transmission line:

Cable:

Connector:
(ECR side)

Connector cover:

Shielded cable
D-sub 9 pin (female type) connector
Inch pitch (4-40 UNC) lock screw
Shielded cover

ER-A6IN

NO

NAME

PARTS CODE

Q’ty

1

PWB UNIT

CPWBX7317RC01

1

2

PWB BRACKET

LANGT7466RCZZ

1

3

CONNECTOR BRACKET

LANGT7510RCZZ

1

4

SCREW (FOR HOLDING OF THE
PWB AND PWB BRACKET)

LX–BZ6665RCZZ

2

5

SCREW
FOR :

•

 PWB ANGLE AND PWB ANGLE

•

 PWB ANGLE AND MAIN

   CHASSIS

•

 GND WIRE

LX–BZ6774RCZZ

5

6

WIRING TIE

LBNDJ2004SCZZ

1

7

SPACER

PSPAN7039XCZZ

1

8

FERRITE CORE
(FOR INTERNAL CABLE)

RCORF6666RCZZ

1

9

INTERNAL CABLE

QCNW–6856RCZZ

1

10

BNC–T CONNECTOR

QCNC–6811RC0C

1

ER-A5RS

NO

NAME

PARTS CODE

Q’ty

1

PWB UNIT

CPWBS7292RC01

1

2

BRACKET

LANGT7466RCZZ

1

3

SCREW (FOR PWB AND
BRACKET)

LX–BZ6665RCZZ

2

4

SCREW (FOR HOLDING OF
THE PWB BRACKET, AND
BRACKET TO BRACKET)

LX–BZ6774RCZZ

3

5

SCREW (FOR HOLDING OF
THE RS232 CABLE CORE)

XHBSD30P08000

2

6

WIRE TIE

LBNDJ2004SCZZ

1

7

CLAMP
(FOR RS232 CABLE)

LHLDW6814RCZZ

2

8

SPACER

PSPAN7039XCZZ

1

9

FERRITE CORE
(FOR EXTERNAL CABLE)

RCORF6658RCZZ

2

 8 

1) Connect the internal cable to the interface PWB unit. 

Α

In-Line cable

1

Connect the branch cable 

1

 to the BNC-T connector 

2

.  (Fig. 1)

Fig. 1

2

Connect the BNC-T connector to the internal cable. (Fig. 2)

Fig. 2

Β

RS232 cable

Fig. 3

•

Be sure to install the core 

3

 (RCORF6658RCZZ) on RS-232C

cable. (Fig. 3)

2) To install two interface PWB’s, follow the next steps. (When in-

stalling the ER-A6IN and the ER-A5RS)

1

Insert two spacers 

α

 and connect the connectors of the interface

PWB together (Fig.4).

∗

Make sure the spacer is mounted properly to insure proper
connection.

2

Secute the brackets 

δ

 with the screws 

β

 and 

χ

 (LX-

BZ6774RCZZ: Self tap screw). (Fig. 4)

Fig. 4

3) Remove two rear cover holding screws and remove the rear cover

4

  (Fig.5).

∗

The interface PWB needs to be inserted into the left side slot
as seen from rear.

∗

Tilt up the popup dispalay when removing the rear cover.

4) Break open the knockout  

5

  of the rear cover  

4

  (Fig.5).

After beraking open the knockout 

5

, file off the new hole.

5) Insert the interface PWB 

6

 onto the connector of the main PWB

7

, and fasten the bracket to the main chassis using screws 

8

(LX-BZ6774RCZZ: Self tap screw) (Fig.5).

∗

Insert both sides of the interface PWB along the guides of the
bottom cabinet.

2

1

3

 RCORF6658RCZZ

a

c

: LX-BZ6774RCZZ

: LX-BZ6774RCZZ

b

d

d

 9 

6) Route the external cable 

9

 through the hole and fasten the rear

cover (Fig.5)

<<Left side>>

Fig. 5

In the ER-A570, option cables can be pulled out from three points in
the rear cover of the body. Refer to figs, 5, 6, 7 and 8.

1) The picture below shows how to pull out the cables from the left

side. (Fig. 6)

Fig. 6

2) The picture below shows how to pull out the cables from the right

side. (Fig. 7)

Fig. 7

3) The picture below shows how to pull out the cables from the

center. (Fig. 8)

∗

To pull out the cable from the center, slide the drawer back-
wards.

Fig. 8

4

5

6

7

8

9

5

5

LBNDJ2004SCZZ

LBNDJ2004SCZZ

LBNDJ2004SCZZ

 10 