Cosel AME Series User manual

Extended-UART
AME Series
Extended-UART Manual
ver1.1E 2020.2.12

Applications Manual
1. Overview
2. Extended-UART Wiring and Connection
Extended-UART pins of AME series
Connection method
Internal circuit and recommended value of pull-up resistor
Address setting
3. Communication Specifications
Communication specifications
4. Communication Protocol
Overview
Communication frames and packets
Structure of data bit
Check sum
Data format of command packet
Data format of reply packet
Reply packet in case of communication error
5. Hardware Specifications of Extended-UART
Absolute maximum ratings for communication terminals
Electrical characteristics of communication terminals
Wiring length
Electrical characteristics of communication signal
6. Command Specifications of Extended-UART
Outline of commands in Extended-UART
Commands to turn output voltage on/off
Commands to set output voltage
Commands to set constant current
Commands to set output voltage sequence
Commands to set accessory functions
Monitor commands
State acquisition commands
Commands to set address, memory, and communication
Commands to acquire product information
Appendix
List of Extended-UART commands
Availability and accuracy of Extended-UART commands
A. Revision history
Note: The contents described in this document are those available at the time of publication and are subject to change
without prior notice due to product improvement and corresponding changes in the specifications. Please check the
web page of COSEL for the latest version.
We have paid full attention to ensure the accuracy of this document. We will not be responsible for any damages,
including those due to misstatement and/or missing information, and indirect faults resulting from the use of the
information in this document.
Appendix2 Appendix-4
A-1
Appendix1 Appendix-1
6.6 32
6.7 36
6.8 38
6.9 41
6.10 48
6.3 20
6.4 23
6.5 26
6.2 15
9
5.1 9
5.2 9
5.3 9
5.4 10
11
6.1 11
4.5 7
4.6 8
4.7 8
4.2 5
4.3 6
4.4 6
4
3.1 4
5
4.1 5
2.2 2
2.3 2
2.4 3
AME series ---Extended-UART---
Page
1
1
2.1 1
ver1.1E 2020.2.12

2.1 Extended-UART pins of AME series
*AUXG is not isolated to SGND.
8 SGND Signal ground
Figure 2.1 AME series connector
6 ADDR1 Address bit 1
7 ADDR2 Address bit 2
Table 2.2 Function of pins related to Extended-UART on CN2
Pin number Pin name Function
5 ADDR0 Address bit 0
2 SGND Signal ground
7 INFO Extended-UART signal
8 INFOG Extended-UART signal ground
Extended-UART is a communication protocol that enables single-wire and bi-directional
communications among multiple units using a software and the isolation to the standard UART which is
the general-purpose communication.
With this product, monitoring of the operational status of the power supply and changing of various set
values are enabled by the Extended-UART.
In addition, the non-volatilization memory in AME can maintain various set values and information
even if input voltage is shut off.
The communication system consists of a master and slaves. One master like a UART module can
connect to up to four slaves which is AME units.
Communications partner is specified by the "address" set for each slave.
Tables 2.1 and 2.2 show names and functions of pins related to the Extended-UART in this product.
Table 2.1 Function of pins related to Extended-UART on CN1
Pin number Pin name Function
2.1
Pin configuration
2. Extended-UART Wiring and Connection
2.1
Pin configuration
1. Overview
Applications manual
For AME series
1ver1.1E 2020.2.12

2.2 Connection method
Figure 2.2 shows a connection example for the Extended-UART.
UB232R(FTDI Chip)
AE-UM232R（AKIZUKI DENSHI TSUSHO）
2.3 Internal circuit and recommended value of pull-up resistor
2.3.1 Internal circuit
Figure 2.2 Connection example of Extended-UART
Figure 2.3 shows the internal circuit of INFO terminal.
Terminals of the communication function (INFO/INFOG) are isolated from the other circuit ( input,
output, FG, various function terminals ) .
Figure 2.3 Internal circuit of INFO
Applications manual
For AME series
* D1 is not required if TxD uses an open collector UART module .
Please connect TxD and RxD directly.
* Depending on the type of UART module, the Low level may not meet the specification due to high internal impedance.
Confirmed UART module
R: 1.5kΩ
VF:0.9-1.3V
INFO
INFOG
(Ex.) Toshiba :CES388
ROHM :RB511SM-40
Panasonic :DB2S30900L
* Please contact us if connection with five or more slaves is necessary.
* D1: Schottky diode
2ver1.1E 2020.2.12

2.3.2 Recommended value of pull-up voltage and resistor
A pull-up resistor is required on the communication line.
Table 2.3 shows recommended values of pull-up voltage and resistor.
Check the threshold voltage of the UART module to be used.
Pull-up voltage ︓5V
Pull-up resistance ︓680Ω
2.4 Address setting
0︓Short 1︓Open
The voltage of high level depends on the number of connected units because of the internal
impedance of INFO terminal.
Figure 2.4 Method of address setting
The address can be from "1" to "7". (It cannot be set to "0".)
The address can be set by connection conditions (short/open) of address setting pins(ADDR0,
ADDR1, ADDR2) and the signal ground pin(SGND).
1 1 06
1 1 1 7
The address setting pins (ADDR0, ADDR1, ADDR2) are isolated from the input, the output, FG
and CN3.
10 0 4
101 5
0102
01 1 3
000 -
00 1 1
ADDR2 ADDR1 ADDR0 Address
4 4 2.5
2 2 3.1
3 3 2.7
Table 2.4 Voltage of high level by number of units
No. Number of
connected units High level (V) Pull-up condition
1 1 3.8
1 Pull-up voltage V 5
2 Pull-up resistance Ω680
Table 2.3 Recommended value of pull-up voltage and resistor
No. Item Unit Value Remark
Applications manual
For AME series
ADDR0
5.0V
ADDR1
ADDR2
SGND
AME
○
○
○
○
○
○
0.55mA max
10kΩ10kΩ 10kΩ
3ver1.1E 2020.2.12

3.1 Communication specifications
Table 3.1 shows the communication specifications of the AME series.
* Please contact us if connection with five or more slaves is necessary.
8 bits
8 Stop bit 1 bit
Start-stop synchronization
1 : N （Master : Slave)
2400 bps
4Maximum number of
connected units
2 Synchronization scheme
3 Connection configuration
5 Communication speed
4*
Flow control
Data format
None6
The master like the UART module should be set according to Table 3.1.
No. SpecificationItem
Single-wire, half-duplex1 Communication method
9 Parity 1 bit, Even parity
7 Data length
Table 3.1 Communication specifications
10 Transfer direction LSB first
2.1
Pin configuration
3. Communication Specifications
Applications manual
For AME series
4ver1.1E 2020.2.12

4.1 Overview
: The transmission time should be 250 msec or shorter.
Processing time
: Maximum 150 msec
: Maximum 25 msec
4.2 Communication frames and packets
The communication operation in the Extended-UART starts when the master transmits a
command packet to a slave, and ends when the corresponding slave (AME) transmits a reply
packet to the master.
Figure 4.1 Overview of communication operation
Command-packet
transmission time
If the transmission time exceeds 250 msec, the slave fails
with a timeout error and becomes the waiting mode to receive a packet.
Reply-packet
transmission time
If the address contained in the received command packet matches its own address, the slave sends
a reply-packet, but if it does not match, it will not send anything.
Parity bit
Stop bit
Data bits (8bits)
Figure 4.2 Structure of communication frame
Extended-UART is half-duplex communication, do not transmit command packets during reply
packet transmission.
Both the command packet and the reply packet are composed of five frames.
Each communication frame has a total of 11 bits, consisting of a start bit, data bits (8 bits), a
parity bit, and a stop bit. (See Figure 4.2.)
Start bit
2.1
Pin configuration
4. Communication Protocol
Master
Slave
Command packet
Reply packet
Applications manual
For AME series
Command-packet
transmission time
Processing
time
Reply-packet
transmission time
5ver1.1E 2020.2.12

4.3 Structure of data bit
【
Example of address setting
】
When communicating with the slave which has "6" of address.
"6"
→
110b
4.4 Check sum
* An example is shown in ( ).
Address data
Figure 4.3 Structure of data bit
For all communication frames, the high three bits contain the address and the low five bits contain
data.
The robustness of the communication data is maintained by the specification that all
communication frames have the address information.
D7 D6 D5 D4 D3 D2 D1 D0
D7 D6 D5 D4 D3 D2 D1 D0
Figure 4.4 Example of address setting
Both the command packet and reply packet have a checksum for detecting communication errors.
All data excluding the address in Fram 0, 2, 3 and 4 are totaled, and the low four bits are stored to
1 to 4 bit in Frame 1.
The checksum configuration is shown in Figure 4.5.
1 1 0 Data
Figure 4.5 Structure of checksum
Applications manual
For AME series
7654321076543210765432107654321076543210
0
＋ ＋
Data4
Frame0 Frame1 Frame2 Frame3 Frame4
Address Data0 Address Check
sum - Address Data2 Address Data3 Address
(110b) (11110b) (110b) (0111b) (110b)
11110b
＋
01000b 00000b 00001b
(110b) (00000b) (110b) (00001b)
Total value 100111b → Lower 4 bit 0111b
(01000b)
6ver1.1E 2020.2.12

4.5 Data format of command packet
Specify "0" for bit 0 of communication frame 1.
Figure 4.8 shows the format for a 20-bit command.
Specify "0" for bit 0 of communication frame 1.
The command in the command packet of the Extended-UART is the variable length format as shown
in Table 4.1.
No. Argument lengthType Remark
Table 4.1 Command types
2 10 bits
1 16 bits5-bit command
10-bit command
It is the command to transmit numerical value of 0 to 65536 to the slave.
It is the command to transmit numerical value of 0 to 1023 to the slave.
(1) Format of 5-bit command
5-bit command is assigned to the data part of communication frame 0.
The most significant bit in 16 bits of arguments is assigned to 0 bit in Frame 1. The
remaining 15 bits are divided into three with 5 bits and are assigned to data parts in Frame
2, 3 and 4.
Figure 4.6 shows the format for a 5-bit command.
3 None20-bit command
It is the command which does not have any argument.
Figure 4.6 Data format of 5-bit command
(2) Format of 10-bit command
10 bits of commands are divided into two with 5 bits and are assigned to the data part of
Frames 0 and 2.
10 bits of arguments are divided into two with 5 bits and are assigned to the data part of
Frames 3 and 4.
Figure 4.7 shows the format for a 10-bit command.
Figure 4.7 Data format of 10-bit command
(3) 20-bit command
20 bits of commands are divided into four with 5 bits and are assigned to the data parts of
Frames 0, 2, 3, and 4. The 20-bit command does not have any arguments.
Figure 4.8 Data format of 20-bit command
Applications manual
For AME series
7654321076543210765432107654321076543210
Argument (16 bits)
Frame0 Frame1 Frame2 Frame3 Frame4
Address
Command
(5bit)
Address Check
sum
Address Address Address
7654321076543210765432107654321076543210
Address
Argument (10 bits)
Frame0 Frame1 Frame2 Frame3 Frame4
Address
Command
(5bit)
Address Check
sum 0
Address
Command
(5bit)
Address
7654321076543210765432107654321076543210
Command
(5bit)
Command
(5bit)
Address
Command
(5bit)
Address AddressAddress
Command
(5bit)
Address Check
sum 0
Frame0 Frame1 Frame2 Frame3 Frame4
7ver1.1E 2020.2.12

4.6 Data format of reply packet
The format of the reply packet is shown in Figure 4.9.
4.7 Reply packet in case of communication error
1) Parity error
2) Frame error
3) Timeout (see Section 4.1)
(e.g. The target output module is not working by GI.)
Error code
(Decimal)
0
1
2
3
224
4
5
6
256
8449
(e.g. Transmitting the write command at the time when the protection of write command is enabled.)
Error description
No corresponding command
The argument outside settable range is specified.
(e.g. Specifying the argument exceeding 120% of the rated output voltage.)
Arguments are inconsistent.
(e.g. Specifying the lowest value which is higher than the highest value.)
If the following hardware error occurs, any reply packet is not transmitted because the slave
cannot recognize the command packet.
Figure 4.9 Data format of reply packet
Identifier information: when the communication is normal, the command value in Frame 0 of the
command packet is returned.
(1) Hardware error
An Extended-UART reply packet consists of the address information, the identifier information, the
checksum, and the return value.
5
6
(e.g. The command is receieed before the process is completed.)
The command to the empty slot is transmitted.
(e.g. The empty slot is selected.)
9
7
8
(2) Software error
If the command packet sent from the master had errors, the reply packet indicating an error is
transmitted.
Identifier information: 11111b(5bit)
Return value : Error code as shown in Table 4.2
Table 4.2 Error codes
No.
1
2
3
4
The specified command is not valid.
The state of the internal process is busy.
The command that do not correspond to the setting target is transmitted.
(e.g. The command to monitor the output voltage is transmitted to the front-end module.)
Checksum mismatch
Internal communication error
Applications manual
For AME series
7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0
return value16bit)
Frame0 Frame1 Frame2 Frame3 Frame4
Address Indentifier
infomation
(5bit)
Address Check
sum
Address Address Address
8ver1.1E 2020.2.12