UPS 通信协议

COMMUNICATION PROTOCOL

VERSION : 2.7

CHECKED BY :

PREPARED BY :

DATE : SEP. 30, 1995

FILE :

DATE :V2.7 : JULY 30 ,1996

DATE

DESCRIPTION

MODIFY BY

2.6

2.7

95-9-30

96-8-01

UPDATE “D” COMMAND ( -> )

Disable “D” COMMAND

Kevin Chiou

Kevin Chiou

MegaTec Communication Protocols for UPS

2

A. 概括: 本文件指定的高级-智能UPS的RS232C通讯协议。该协议提供了以下功能：

1. 监视器充电状态。

MEGATEC COMMUNICATION PROTOCOL

2. 监控电池的状态和条件。

3. 状态监测工具。

4. 为电脑提供电源开启和关闭的省电效用如期开关功能。

电脑将控制信息由随后查询交流。UPS将响应由或付诸行动的信息。Computer will control information exchange by a query followed by

. UPS will respond with information followed by a or

action.

波特率............... : 2400 bps

数据长度.......... : 8 bits

停止位..................... : 1 bit

奇偶性........................ : NONE

B. 硬件:

CABLING :

COMPUTER

RX

TX

<----------

UPS

TX (pin 9)

===================================

----------> RX (pin 6)

GND

<---------- GND (pin 7)

(9 pins female D-type connector)

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C. 通信协议:

1. 状态查询:

Computer : Q1

UPS : UPS状态的数据流，如 UPS status data stream, such as

(MMM.M NNN.N PPP.P QQQ RR.R TT.T b7b6b5b4b3b2b1b0

UPS状态的数据流:

之间应该有一个数据分离领域的每一个空格字符。每个字段的含义列表如下：There

should be a space character between every field for data separation. The meaning of each

field is list as followed:

a. 起始字节 : (

b.输入电压 : MMM.M

M是一个整数，从0到9。单位为伏特。

c.输入故障电压: NNN.N

N为整数，并从0到9。单位为伏特。

** For OFF LINE UPS**

Its purpose is to identify a short duration voltage glitch

which cause OFF line UPS to go to Invter mode. If this occurs

input voltage will appear normal at query prior to glitch and

will still appear normal at next query.

The I/P fault voltage will hold glitch voltage till next

query. After query, the I/P fault voltage will be same as I/P

voltage until next glitch occurs.

** For ON LINE UPS**

Its purpose is to identify a short duration utility fail

which cause ON line UPS to go to battery mode. If this occurs

input voltage will appear normal at query prior to fail and

will still appear normal at next query.

The I/P fault voltage will hold utility fail voltage till

next query. After query, the I/P voltage will be same as I/P

voltage until next utility fail occurs.

d.输出电压 : PPP.P

P is an integer number ranging form 0 to 9.

The unit is Volt.

e.O/P current : QQQ

QQQ is a percent of maximum current, not an absolute value.

f.输入频率 : RR.R

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MegaTec Communication Protocols for UPS

R is an integer number ranging from 0 to 9.

The unit is HZ.

g.电池电压 : SS.S or

S is an integer number ranging from 0 to 9.

For on-line units battery voltage/cell is provided in the

form .

For standby units actual battery voltage is provided in

the form SS.S .

UPS type in UPS status will determine which reading was

obtained.

4

h.温度: TT.T

T is an integer number ranging form 0 to 9.

The unit is degree of

centigrade.

状态 :

是一个字节的二进制信息，如

.

Where bn is a ASCII character ‘0’ or ‘1’.

.

UPS status :

位

7

6

5

4

3

2

1

0

描述

1 : Utility Fail (Immediate) 实用程序失败（即时）

1 : Battery Low 电池低

1 : Bypass/Boost or Buck Active 旁路/升压或降压活性

1 : UPS Failed UPS故障

1 : UPS Type is Standby (0 is On_line) UPS的类型是待机

1 : Test in Progress 测试正在进行

1 : Shutdown Active 进行关机

1 : Beeper On 蜂鸣器

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j.

停止字节 :

例子: 电脑: Q1

UPS:

(208.4 140.0 208.4 034 59.9 2.05 35.0 00110000

方法 : 输入电压 208.4V.

输入故障电压 140.0V.

输出电压208.4V.

输出电流 34 %.

输入频率 59.9 HZ.

电池电压 2.05V.

温度 35.0 degrees of centigrade. UPS type

is on-line , UPS failed. Bypass active , and

shutdown not

active.

温度 35.0摄氏度。 UPS类型为在线，UPS故障。旁路活跃，关闭不活跃。

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2. Test for 10 seconds:

Computer : T

UPS : Test for 10 seconds and return to utility.

If battery low occur during testing, UPS will return to

utility immediately.

Computer : TL

until battery low :

UPS : Test until battery low and return to utility.

for specified time period :

Computer : T

UPS : Test for minutes.

a. During testing, UPS returns to utility immediately, if

battery low occur.

b. is a number ranging from 01 to 99.

5. Turn On/Off beep -- Toggle the UPS beeper :

Computer : Q

When the AC power failed, UPS will generate a warning beep to

inform the manager. Manager could toggle the warning beep by

sending this command .

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6. Shutdown Command :

Computer : S

UPS : Shut UPS output off in minutes.

a. The UPS output will be off in minutes, even if the

utility power is present.

b. If the battery low occurs before minutes, the

output is turned off immediately.

c. After UPS shutdown, the controller of UPS monitors the

utility power. If the utility is recovered, the UPS will wait

for 10 seconds and connect the utility to output.

d. is a number ranging form .2, .3, ..., 01, 02, ..., up to 10.

For example : S.3 --- shut output off in (.3) minutes

7. Shutdown and Restore Command

:

Computer : SR

UPS : Shut UPS output off in minutes, and waiting

for minutes then turn on UPS output

again.

a. The shutdown sequence is the same as the previous

command.

When the minutes expired, the utility do not restore,

the UPS will wait until utility restore.

b. If UPS is in shutdown waiting state, the "C" command can

let the shutdown procedure

cancelled.

c. If UPS is in restore waiting state, the "C" command can

let the UPS output turned on, but UPS must be hold off at

least 10 seconds. (if utility is present)

d. is a number ranging form .2, .3, ..., 01, 02, ..., up to 10.

e. is a number ranging form 0001 to 9999.

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8. Cancel Shutdown Command :

Computer : C

UPS : Cancel the SN and SNR command.

a. If UPS is in shut down waiting state, the shut down command

is

cancelled.

b. If UPS is in restore waiting state, the UPS output is turned

on, but UPS must be hold off at least 10 seconds.

(if utility is present)

9. Cancel Test Command :

Computer : CT

UPS

: Cancel all test activity and connect the utility to

output immediately.

10. UPS Information Command:

Computer : I

UPS : #Company_Name UPS_Model Version

This function will make the UPS respond with the basic information about the company who

manufacture the UPS, the model name of the UPS and the version number of the UPS

firmware. The length of every field is listed as follows:

Company_Name : 15 characters, leave space if less than 15

characters

UPS_Model

Version

: 10 characters, leave space if less than 10 characters

: 10 characters, leave space if less than 10 characters

There should be a space character between every field for separation.

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11. UPS Rating Information:

Computer : F

UPS : #MMM.M QQQ RR.R

This function makes the UPS answer the rating value of UPS. There should be a space

character between every field for separation. The UPS‘s response contains the following

information field:

a. Rating Voltage: MMM.M

b. Rating Current : QQQ

c. Battery Voltage

d. Frequency

: or SSS.S

: RR.R

D. COMMAND SUMMARY:

ITEM

1a

1

2

3

4

5

6

7

8

9

COMMAND

D

Q1

T

TL

T

Q

S

DESCRIPTION

Status Inquiry *disable

Status Inquiry

10 Seconds Test

Test until Battery Low

Test for Specified Time Period

Turn On/Off beep

Shut Down Command

Shut Down and Restore Command

Cancel Shut Down Command

Cancel Test Command

UPS Information Command

UPS Rating Information

SR

C

CT

I

F

10

11

If the UPS receives any command that it could not handle, the UPS should echo the received

command back to the computer. The host should check if the command send to UPS been echo or

not.

If there is any information field in the UPS‘s response which is unavailable or not supported, the UPS should fill the

field with ‘@’.

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E. Invalid Command/Information Handling