高手请看！

ADAM-5510M：4槽可编程控制器 ADAM-5510E：8槽可编程控制器 ADAM-5510/TCP:带以太网口的可编程控制器 ADAM-5510E/TCP: 8槽带以太网口的可编程控制器
硬件介绍：CPU: 80188 microprocessor
Memory:
1.5MB flash memory:
- 256KB system Disk (Drive C: Read Only)
- 256KB flash memory (Accessed by Function LIB)
- 1024KB file system, 960KB for user applications (Drive D:Read/Write)
640KB SRAM
- up to 384KB with battery backup (Accessed by Function LIB)
133 Byte Security SRAM
- For User to storage of important information (Accessed by FunctionLIB)

Operating System: ROM-DOS (MS-DOS 6.22 Compatible)
Real-time Clock: yes
Watchdog Timer: yes

研华的485模块吧，偶没用过这种，瞎猜的。